120787815331057 has 16 divisors (see below), whose sum is σ = 138222014724864. Its totient is φ = 103398399000000.

The previous prime is 120787815331037. The next prime is 120787815331069. The reversal of 120787815331057 is 750133518787021.

It is a cyclic number.

It is not a de Polignac number, because 120787815331057 - 2¹⁵ = 120787815298289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120787815330992 and 120787815331010.

It is not an unprimeable number, because it can be changed into a prime (120787815331037) 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, 13823932 + ... + 20800882.

It is an arithmetic number, because the mean of its divisors is an integer number (8638875920304).

Almost surely, 2^{120787815331057} is an apocalyptic number.

It is an amenable number.

120787815331057 is a deficient number, since it is larger than the sum of its proper divisors (17434199393807).

120787815331057 is a wasteful number, since it uses less digits than its factorization.

120787815331057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980160.

The product of its (nonzero) digits is 9878400, while the sum is 58.

The spelling of 120787815331057 in words is "one hundred twenty trillion, seven hundred eighty-seven billion, eight hundred fifteen million, three hundred thirty-one thousand, fifty-seven".