15478831072 has 24 divisors (see below), whose sum is σ = 30534564816. Its totient is φ = 7724020992.

The previous prime is 15478831033. The next prime is 15478831091. The reversal of 15478831072 is 27013887451.

It is a super-2 number, since 2×15478831072² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464733 + ... + 496924.

It is an arithmetic number, because the mean of its divisors is an integer number (1272273534).

Almost surely, 2^15478831072 is an apocalyptic number.

It is an amenable number.

15478831072 is a deficient number, since it is larger than the sum of its proper divisors (15055733744).

15478831072 is an equidigital number, since it uses as much as digits as its factorization.

15478831072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962170 (or 962162 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 15478831072 in words is "fifteen billion, four hundred seventy-eight million, eight hundred thirty-one thousand, seventy-two".