2157337572566 has 16 divisors (see below), whose sum is σ = 3530316890880. Its totient is φ = 980572394280.

The previous prime is 2157337572547. The next prime is 2157337572613. The reversal of 2157337572566 is 6652757337512.

It is a super-2 number, since 2×2157337572566² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154906 + ... + 2376653.

It is an arithmetic number, because the mean of its divisors is an integer number (220644805680).

Almost surely, 2^{2157337572566} is an apocalyptic number.

2157337572566 is a deficient number, since it is larger than the sum of its proper divisors (1372979318314).

2157337572566 is a wasteful number, since it uses less digits than its factorization.

2157337572566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559339.

The product of its digits is 55566000, while the sum is 59.

The spelling of 2157337572566 in words is "two trillion, one hundred fifty-seven billion, three hundred thirty-seven million, five hundred seventy-two thousand, five hundred sixty-six".