155700139941657 has 10 divisors (see below), whose sum is σ = 232589097937658. Its totient is φ = 103800093294384.

The previous prime is 155700139941629. The next prime is 155700139941673. The reversal of 155700139941657 is 756149931007551.

155700139941657 is a `hidden beast` number, since 1 + 5 + 5 + 70 + 0 + 13 + 99 + 416 + 57 = 666.

155700139941657 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 121086497452761 + 34613642488896 = 11003931^2 + 5883336^2 .

It is not a de Polignac number, because 155700139941657 - 2⁷ = 155700139941529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155700139941594 and 155700139941603.

It is not an unprimeable number, because it can be changed into a prime (155700139941457) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 961111974868 + ... + 961111975029.

Almost surely, 2^{155700139941657} is an apocalyptic number.

It is an amenable number.

155700139941657 is a deficient number, since it is larger than the sum of its proper divisors (76888957996001).

155700139941657 is an equidigital number, since it uses as much as digits as its factorization.

155700139941657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922223949909 (or 1922223949900 counting only the distinct ones).

The product of its (nonzero) digits is 35721000, while the sum is 63.

The spelling of 155700139941657 in words is "one hundred fifty-five trillion, seven hundred billion, one hundred thirty-nine million, nine hundred forty-one thousand, six hundred fifty-seven".