2157013417555 has 16 divisors (see below), whose sum is σ = 2651940936288. Its totient is φ = 1683273312000.

The previous prime is 2157013417543. The next prime is 2157013417561. The reversal of 2157013417555 is 5557143107512.

It is a happy number.

It is not a de Polignac number, because 2157013417555 - 2⁵ = 2157013417523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614260 + ... + 2165950.

It is an arithmetic number, because the mean of its divisors is an integer number (165746308518).

Almost surely, 2^{2157013417555} is an apocalyptic number.

2157013417555 is a deficient number, since it is larger than the sum of its proper divisors (494927518733).

2157013417555 is a wasteful number, since it uses less digits than its factorization.

2157013417555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558518.

The product of its (nonzero) digits is 735000, while the sum is 46.

The spelling of 2157013417555 in words is "two trillion, one hundred fifty-seven billion, thirteen million, four hundred seventeen thousand, five hundred fifty-five".