15535542216 has 32 divisors (see below), whose sum is σ = 39099528000. Its totient is φ = 5143757760.

The previous prime is 15535542193. The next prime is 15535542229. The reversal of 15535542216 is 61224553551.

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, 2168620 + ... + 2175771.

It is an arithmetic number, because the mean of its divisors is an integer number (1221860250).

Almost surely, 2^15535542216 is an apocalyptic number.

It is an amenable number.

15535542216 is an abundant number, since it is smaller than the sum of its proper divisors (23563985784).

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

15535542216 is a wasteful number, since it uses less digits than its factorization.

15535542216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344549 (or 4344545 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The spelling of 15535542216 in words is "fifteen billion, five hundred thirty-five million, five hundred forty-two thousand, two hundred sixteen".