16521611001152 has 56 divisors (see below), whose sum is σ = 34728251803200. Its totient is φ = 7771595397120.

The previous prime is 16521611001151. The next prime is 16521611001163. The reversal of 16521611001152 is 25110011612561.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16521611001151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622652 + ... + 5781947.

Almost surely, 2^{16521611001152} is an apocalyptic number.

It is an amenable number.

16521611001152 is an abundant number, since it is smaller than the sum of its proper divisors (18206640802048).

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

16521611001152 is a wasteful number, since it uses less digits than its factorization.

16521611001152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406999 (or 6406989 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 32.

The spelling of 16521611001152 in words is "sixteen trillion, five hundred twenty-one billion, six hundred eleven million, one thousand, one hundred fifty-two".