16551570516 has 24 divisors (see below), whose sum is σ = 41591126304. Its totient is φ = 5092790880.

The previous prime is 16551570509. The next prime is 16551570527. The reversal of 16551570516 is 61507515561.

It is a super-2 number, since 2×16551570516² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 53049750 + ... + 53050061.

It is an arithmetic number, because the mean of its divisors is an integer number (1732963596).

Almost surely, 2^16551570516 is an apocalyptic number.

It is an amenable number.

16551570516 is an abundant number, since it is smaller than the sum of its proper divisors (25039555788).

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

16551570516 is a wasteful number, since it uses less digits than its factorization.

16551570516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106099831 (or 106099829 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 16551570516 in words is "sixteen billion, five hundred fifty-one million, five hundred seventy thousand, five hundred sixteen".