157823757477 has 16 divisors (see below), whose sum is σ = 243978756480. Its totient is φ = 100641236256.

The previous prime is 157823757467. The next prime is 157823757521. The reversal of 157823757477 is 774757328751.

157823757477 is a `hidden beast` number, since 1 + 5 + 7 + 82 + 37 + 57 + 477 = 666.

It is not a de Polignac number, because 157823757477 - 2⁴ = 157823757461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157823757467) 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, 127071648 + ... + 127072889.

It is an arithmetic number, because the mean of its divisors is an integer number (15248672280).

Almost surely, 2^157823757477 is an apocalyptic number.

It is an amenable number.

157823757477 is a deficient number, since it is larger than the sum of its proper divisors (86154999003).

157823757477 is a wasteful number, since it uses less digits than its factorization.

157823757477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254144569 (or 254144563 counting only the distinct ones).

The product of its digits is 80673600, while the sum is 63.

The spelling of 157823757477 in words is "one hundred fifty-seven billion, eight hundred twenty-three million, seven hundred fifty-seven thousand, four hundred seventy-seven".