2157542158315 has 8 divisors (see below), whose sum is σ = 2589112338768. Its totient is φ = 1725992560800.

The previous prime is 2157542158307. The next prime is 2157542158327. The reversal of 2157542158315 is 5138512457512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2157542158315 - 2³ = 2157542158307 is a prime.

It is a Duffinian 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, 4914177 + ... + 5335186.

It is an arithmetic number, because the mean of its divisors is an integer number (323639042346).

Almost surely, 2^{2157542158315} is an apocalyptic number.

2157542158315 is a deficient number, since it is larger than the sum of its proper divisors (431570180453).

2157542158315 is a wasteful number, since it uses less digits than its factorization.

2157542158315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291469.

The product of its digits is 1680000, while the sum is 49.

The spelling of 2157542158315 in words is "two trillion, one hundred fifty-seven billion, five hundred forty-two million, one hundred fifty-eight thousand, three hundred fifteen".