1577505112157 has 16 divisors (see below), whose sum is σ = 1738541511168. Its totient is φ = 1422145771200.

The previous prime is 1577505112151. The next prime is 1577505112159. The reversal of 1577505112157 is 7512115057751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1577505112157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1577505112151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5392148 + ... + 5677170.

It is an arithmetic number, because the mean of its divisors is an integer number (108658844448).

Almost surely, 2^{1577505112157} is an apocalyptic number.

It is an amenable number.

1577505112157 is a deficient number, since it is larger than the sum of its proper divisors (161036399011).

1577505112157 is a wasteful number, since it uses less digits than its factorization.

1577505112157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294980.

The product of its (nonzero) digits is 428750, while the sum is 47.

The spelling of 1577505112157 in words is "one trillion, five hundred seventy-seven billion, five hundred five million, one hundred twelve thousand, one hundred fifty-seven".