2164545025722 has 16 divisors (see below), whose sum is σ = 4810100057280. Its totient is φ = 721515008556.

The previous prime is 2164545025703. The next prime is 2164545025837. The reversal of 2164545025722 is 2275205454612.

2164545025722 is a `hidden beast` number, since 2 + 1 + 64 + 545 + 0 + 25 + 7 + 22 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20042083518 + ... + 20042083625.

It is an arithmetic number, because the mean of its divisors is an integer number (300631253580).

Almost surely, 2^{2164545025722} is an apocalyptic number.

2164545025722 is an abundant number, since it is smaller than the sum of its proper divisors (2645555031558).

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

2164545025722 is a wasteful number, since it uses less digits than its factorization.

2164545025722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40084167154 (or 40084167148 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 45.

The spelling of 2164545025722 in words is "two trillion, one hundred sixty-four billion, five hundred forty-five million, twenty-five thousand, seven hundred twenty-two".