157756720455 has 24 divisors (see below), whose sum is σ = 274166502480. Its totient is φ = 83914911360.

The previous prime is 157756720409. The next prime is 157756720487. The reversal of 157756720455 is 554027657751.

157756720455 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 567 + 20 + 4 + 55 = 666.

It is not a de Polignac number, because 157756720455 - 2⁶ = 157756720391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4607886 + ... + 4641995.

It is an arithmetic number, because the mean of its divisors is an integer number (11423604270).

Almost surely, 2^157756720455 is an apocalyptic number.

157756720455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157756720455 is a deficient number, since it is larger than the sum of its proper divisors (116409782025).

157756720455 is a wasteful number, since it uses less digits than its factorization.

157756720455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250271 (or 9250268 counting only the distinct ones).

The product of its (nonzero) digits is 10290000, while the sum is 54.

The spelling of 157756720455 in words is "one hundred fifty-seven billion, seven hundred fifty-six million, seven hundred twenty thousand, four hundred fifty-five".