1557482670138 has 16 divisors (see below), whose sum is σ = 3126545140320. Its totient is φ = 517230923376.

The previous prime is 1557482670061. The next prime is 1557482670193. The reversal of 1557482670138 is 8310762847551.

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, 482489920 + ... + 482493147.

It is an arithmetic number, because the mean of its divisors is an integer number (195409071270).

Almost surely, 2^{1557482670138} is an apocalyptic number.

1557482670138 is an abundant number, since it is smaller than the sum of its proper divisors (1569062470182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1557482670138 is a wasteful number, since it uses less digits than its factorization.

1557482670138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964983341.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 1557482670138 in words is "one trillion, five hundred fifty-seven billion, four hundred eighty-two million, six hundred seventy thousand, one hundred thirty-eight".