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12680745480 = 233351323107367
BaseRepresentation
bin10111100111101010…
…01101001000001000
31012201202001121121000
423303311031020020
5201432232323410
65454144215000
7626145362304
oct136365151010
935652047530
1012680745480
115417a4a847
12255a90a460
1312711c1bc0
148841c2d04
154e33dcdc0
hex2f3d4d208

12680745480 has 512 divisors, whose sum is σ = 48074342400. Its totient is φ = 2949737472.

The previous prime is 12680745449. The next prime is 12680745491. The reversal of 12680745480 is 8454708621.

12680745480 is a `hidden beast` number, since 1 + 26 + 80 + 7 + 4 + 548 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34552257 + ... + 34552623.

It is an arithmetic number, because the mean of its divisors is an integer number (93895200).

Almost surely, 212680745480 is an apocalyptic number.

12680745480 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 12680745480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24037171200).

12680745480 is an abundant number, since it is smaller than the sum of its proper divisors (35393596920).

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

12680745480 is a wasteful number, since it uses less digits than its factorization.

12680745480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 12680745480 in words is "twelve billion, six hundred eighty million, seven hundred forty-five thousand, four hundred eighty".