15454521156 has 24 divisors (see below), whose sum is σ = 36066612064. Its totient is φ = 5150640960.

The previous prime is 15454521133. The next prime is 15454521179. The reversal of 15454521156 is 65112545451.

It is an interprime number because it is at equal distance from previous prime (15454521133) and next prime (15454521179).

It is a super-2 number, since 2×15454521156² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31750 + ... + 178653.

Almost surely, 2^15454521156 is an apocalyptic number.

It is an amenable number.

15454521156 is an abundant number, since it is smaller than the sum of its proper divisors (20612090908).

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

15454521156 is a wasteful number, since it uses less digits than its factorization.

15454521156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216531 (or 216529 counting only the distinct ones).

The product of its digits is 120000, while the sum is 39.

The spelling of 15454521156 in words is "fifteen billion, four hundred fifty-four million, five hundred twenty-one thousand, one hundred fifty-six".