15441156972 has 18 divisors (see below), whose sum is σ = 39031813548. Its totient is φ = 5147052312.

The previous prime is 15441156971. The next prime is 15441156977. The reversal of 15441156972 is 27965114451.

15441156972 is a `hidden beast` number, since 1 + 5 + 4 + 4 + 11 + 569 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (15441156971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214460478 + ... + 214460549.

It is an arithmetic number, because the mean of its divisors is an integer number (2168434086).

Almost surely, 2^15441156972 is an apocalyptic number.

15441156972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15441156972 is an abundant number, since it is smaller than the sum of its proper divisors (23590656576).

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

15441156972 is a wasteful number, since it uses less digits than its factorization.

15441156972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428921037 (or 428921032 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 15441156972 in words is "fifteen billion, four hundred forty-one million, one hundred fifty-six thousand, nine hundred seventy-two".