15541956943156 has 48 divisors (see below), whose sum is σ = 32682916909440. Its totient is φ = 6325725813120.

The previous prime is 15541956943151. The next prime is 15541956943159. The reversal of 15541956943156 is 65134965914551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541956943151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156838510 + ... + 156937573.

It is an arithmetic number, because the mean of its divisors is an integer number (680894102280).

Almost surely, 2^{15541956943156} is an apocalyptic number.

It is an amenable number.

15541956943156 is an abundant number, since it is smaller than the sum of its proper divisors (17140959966284).

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

15541956943156 is a wasteful number, since it uses less digits than its factorization.

15541956943156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313776184 (or 313776182 counting only the distinct ones).

The product of its digits is 87480000, while the sum is 64.

The spelling of 15541956943156 in words is "fifteen trillion, five hundred forty-one billion, nine hundred fifty-six million, nine hundred forty-three thousand, one hundred fifty-six".