1557000866395 has 16 divisors (see below), whose sum is σ = 2012326791552. Its totient is φ = 1149669486720.

The previous prime is 1557000866371. The next prime is 1557000866401. The reversal of 1557000866395 is 5936680007551.

It is a de Polignac number, because none of the positive numbers 2^k-1557000866395 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, 552691 + ... + 1849180.

It is an arithmetic number, because the mean of its divisors is an integer number (125770424472).

Almost surely, 2^{1557000866395} is an apocalyptic number.

1557000866395 is a deficient number, since it is larger than the sum of its proper divisors (455325925157).

1557000866395 is a wasteful number, since it uses less digits than its factorization.

1557000866395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411862.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 1557000866395 in words is "one trillion, five hundred fifty-seven billion, eight hundred sixty-six thousand, three hundred ninety-five".