15613685472 has 192 divisors, whose sum is σ = 51220076544. Its totient is φ = 4045923840.

The previous prime is 15613685429. The next prime is 15613685491. The reversal of 15613685472 is 27458631651.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3449803 + ... + 3454325.

It is an arithmetic number, because the mean of its divisors is an integer number (266771232).

Almost surely, 2^15613685472 is an apocalyptic number.

15613685472 is a gapful number since it is divisible by the number (12) 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 15613685472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25610038272).

15613685472 is an abundant number, since it is smaller than the sum of its proper divisors (35606391072).

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

15613685472 is a wasteful number, since it uses less digits than its factorization.

15613685472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021 (or 5013 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The spelling of 15613685472 in words is "fifteen billion, six hundred thirteen million, six hundred eighty-five thousand, four hundred seventy-two".