2122158916440 has 96 divisors (see below), whose sum is σ = 7119500918400. Its totient is φ = 547653911040.

The previous prime is 2122158916421. The next prime is 2122158916441. The reversal of 2122158916440 is 446198512212.

2122158916440 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 1 + 589 + 1 + 64 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122158916441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95067645 + ... + 95089964.

It is an arithmetic number, because the mean of its divisors is an integer number (74161467900).

Almost surely, 2^{2122158916440} is an apocalyptic number.

2122158916440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122158916440 is an abundant number, since it is smaller than the sum of its proper divisors (4997342001960).

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

2122158916440 is a wasteful number, since it uses less digits than its factorization.

2122158916440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190157657 (or 190157650 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 2122158916440 in words is "two trillion, one hundred twenty-two billion, one hundred fifty-eight million, nine hundred sixteen thousand, four hundred forty".