2157130032577 has 8 divisors (see below), whose sum is σ = 2336809049960. Its totient is φ = 1991196951120.

The previous prime is 2157130032511. The next prime is 2157130032649. The reversal of 2157130032577 is 7752300317512.

It can be written as a sum of positive squares in 4 ways, for example, as 147883317136 + 2009246715441 = 384556^2 + 1417479^2 .

It is not a de Polignac number, because 2157130032577 - 2²³ = 2157121643969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157130032677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490924074 + ... + 490928467.

It is an arithmetic number, because the mean of its divisors is an integer number (292101131245).

Almost surely, 2^{2157130032577} is an apocalyptic number.

It is an amenable number.

2157130032577 is a deficient number, since it is larger than the sum of its proper divisors (179679017383).

2157130032577 is an frugal number, since it uses more digits than its factorization.

2157130032577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981852580 (or 981852554 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 43.

The spelling of 2157130032577 in words is "two trillion, one hundred fifty-seven billion, one hundred thirty million, thirty-two thousand, five hundred seventy-seven".