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12480448680 = 23335717192269
BaseRepresentation
bin10111001111110010…
…01000100010101000
31012012210011111001000
423213321020202220
5201024443324210
65422231155000
7621164030520
oct134771104250
935183144030
1012480448680
1153249848a7
122503815a60
13123b86279b
14865764680
154d0a25ac0
hex2e7e488a8

12480448680 has 768 divisors, whose sum is σ = 53327808000. Its totient is φ = 2534105088.

The previous prime is 12480448637. The next prime is 12480448691. The reversal of 12480448680 is 8684408421.

12480448680 is a `hidden beast` number, since 12 + 4 + 80 + 4 + 486 + 80 = 666.

It is a super-2 number, since 2×124804486802 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 46395586 + ... + 46395854.

It is an arithmetic number, because the mean of its divisors is an integer number (69437250).

Almost surely, 212480448680 is an apocalyptic number.

12480448680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12480448680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26663904000).

12480448680 is an abundant number, since it is smaller than the sum of its proper divisors (40847359320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12480448680 is a wasteful number, since it uses less digits than its factorization.

12480448680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The spelling of 12480448680 in words is "twelve billion, four hundred eighty million, four hundred forty-eight thousand, six hundred eighty".