57191981137395 has 128 divisors (see below), whose sum is σ = 99823790035200. Its totient is φ = 27793156866048.

The previous prime is 57191981137393. The next prime is 57191981137439. The reversal of 57191981137395 is 59373118919175.

It is not a de Polignac number, because 57191981137395 - 2¹ = 57191981137393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57191981137393) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6966981051 + ... + 6966989259.

It is an arithmetic number, because the mean of its divisors is an integer number (779873359650).

Almost surely, 2^{57191981137395} is an apocalyptic number.

57191981137395 is a deficient number, since it is larger than the sum of its proper divisors (42631808897805).

57191981137395 is a wasteful number, since it uses less digits than its factorization.

57191981137395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529.

The product of its digits is 64297800, while the sum is 69.

The spelling of 57191981137395 in words is "fifty-seven trillion, one hundred ninety-one billion, nine hundred eighty-one million, one hundred thirty-seven thousand, three hundred ninety-five".