15623948520 has 256 divisors, whose sum is σ = 56098944000. Its totient is φ = 3855091968.

The previous prime is 15623948497. The next prime is 15623948551. The reversal of 15623948520 is 2584932651.

15623948520 is a `hidden beast` number, since 1 + 56 + 2 + 39 + 48 + 520 = 666.

It is a super-2 number, since 2×15623948520² (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 an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 873507 + ... + 891213.

It is an arithmetic number, because the mean of its divisors is an integer number (219136500).

Almost surely, 2^15623948520 is an apocalyptic number.

15623948520 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 15623948520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28049472000).

15623948520 is an abundant number, since it is smaller than the sum of its proper divisors (40474995480).

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

15623948520 is a wasteful number, since it uses less digits than its factorization.

15623948520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17789 (or 17779 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 15623948520 in words is "fifteen billion, six hundred twenty-three million, nine hundred forty-eight thousand, five hundred twenty".