2158273704057 has 4 divisors (see below), whose sum is σ = 2877698272080. Its totient is φ = 1438849136036.

The previous prime is 2158273704049. The next prime is 2158273704073. The reversal of 2158273704057 is 7504073728512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2158273704057 - 2³ = 2158273704049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2158273704077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359712284007 + ... + 359712284012.

It is an arithmetic number, because the mean of its divisors is an integer number (719424568020).

Almost surely, 2^{2158273704057} is an apocalyptic number.

It is an amenable number.

2158273704057 is a deficient number, since it is larger than the sum of its proper divisors (719424568023).

2158273704057 is an equidigital number, since it uses as much as digits as its factorization.

2158273704057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719424568022.

The product of its (nonzero) digits is 3292800, while the sum is 51.

The spelling of 2158273704057 in words is "two trillion, one hundred fifty-eight billion, two hundred seventy-three million, seven hundred four thousand, fifty-seven".