2162001520665 has 64 divisors (see below), whose sum is σ = 4393794355200. Its totient is φ = 988083375552.

The previous prime is 2162001520649. The next prime is 2162001520673. The reversal of 2162001520665 is 5660251002612.

2162001520665 is a `hidden beast` number, since 2 + 1 + 620 + 0 + 1 + 5 + 20 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 2162001520665 - 2⁴ = 2162001520649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3313516 + ... + 3911954.

It is an arithmetic number, because the mean of its divisors is an integer number (68653036800).

Almost surely, 2^{2162001520665} is an apocalyptic number.

It is an amenable number.

2162001520665 is an abundant number, since it is smaller than the sum of its proper divisors (2231792834535).

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

2162001520665 is a wasteful number, since it uses less digits than its factorization.

2162001520665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602283 (or 602277 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 2162001520665 in words is "two trillion, one hundred sixty-two billion, one million, five hundred twenty thousand, six hundred sixty-five".