157057220507 has 4 divisors (see below), whose sum is σ = 171335149656. Its totient is φ = 142779291360.

The previous prime is 157057220503. The next prime is 157057220531. The reversal of 157057220507 is 705022750751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157057220507 - 2² = 157057220503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157057220503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7138964558 + ... + 7138964579.

It is an arithmetic number, because the mean of its divisors is an integer number (42833787414).

Almost surely, 2^157057220507 is an apocalyptic number.

157057220507 is a deficient number, since it is larger than the sum of its proper divisors (14277929149).

157057220507 is a wasteful number, since it uses less digits than its factorization.

157057220507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14277929148.

The product of its (nonzero) digits is 171500, while the sum is 41.

The spelling of 157057220507 in words is "one hundred fifty-seven billion, fifty-seven million, two hundred twenty thousand, five hundred seven".