2116651660552 has 64 divisors (see below), whose sum is σ = 4750527216960. Its totient is φ = 871348857600.

The previous prime is 2116651660397. The next prime is 2116651660579. The reversal of 2116651660552 is 2550661566112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17394274 + ... + 17515537.

It is an arithmetic number, because the mean of its divisors is an integer number (74226987765).

Almost surely, 2^{2116651660552} is an apocalyptic number.

2116651660552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2116651660552 is an abundant number, since it is smaller than the sum of its proper divisors (2633875556408).

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

2116651660552 is a wasteful number, since it uses less digits than its factorization.

2116651660552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34909894 (or 34909890 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 2116651660552 in words is "two trillion, one hundred sixteen billion, six hundred fifty-one million, six hundred sixty thousand, five hundred fifty-two".