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20476872372480 = 283531237149971
BaseRepresentation
bin1001010011111101001001…
…01101000011000100000000
32200111120101102222000021020
410221332210231003010000
510140443113311404410
6111314540104025440
74212255662221626
oct451764455030400
980446342860236
1020476872372480
116585213694687
12236867b162280
13b56c64aa79c4
1450b12ba4d516
152579b5398a70
hex129fa4b43100

20476872372480 has 432 divisors, whose sum is σ = 69402508846272. Its totient is φ = 5141499494400.

The previous prime is 20476872372479. The next prime is 20476872372527. The reversal of 20476872372480 is 8427327867402.

It is a super-2 number, since 2×204768723724802 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136463895 + ... + 136613865.

Almost surely, 220476872372480 is an apocalyptic number.

20476872372480 is a gapful number since it is divisible by the number (20) 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 20476872372480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34701254423136).

20476872372480 is an abundant number, since it is smaller than the sum of its proper divisors (48925636473792).

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

20476872372480 is a wasteful number, since it uses less digits than its factorization.

20476872372480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150094 (or 150049 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 60.

The spelling of 20476872372480 in words is "twenty trillion, four hundred seventy-six billion, eight hundred seventy-two million, three hundred seventy-two thousand, four hundred eighty".