2157912318093 has 16 divisors (see below), whose sum is σ = 3289892352000. Its totient is φ = 1232475874416.

The previous prime is 2157912318083. The next prime is 2157912318137. The reversal of 2157912318093 is 3908132197512.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2157912318093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157912318073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25660305 + ... + 25744262.

It is an arithmetic number, because the mean of its divisors is an integer number (205618272000).

Almost surely, 2^{2157912318093} is an apocalyptic number.

It is an amenable number.

2157912318093 is a deficient number, since it is larger than the sum of its proper divisors (1131980033907).

2157912318093 is a wasteful number, since it uses less digits than its factorization.

2157912318093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51406576.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 2157912318093 in words is "two trillion, one hundred fifty-seven billion, nine hundred twelve million, three hundred eighteen thousand, ninety-three".