155116460209957 has 2 divisors, whose sum is σ = 155116460209958. Its totient is φ = 155116460209956.

The previous prime is 155116460209897. The next prime is 155116460209973. The reversal of 155116460209957 is 759902064611551.

155116460209957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155115716066116 + 744143841 = 12454546^2 + 27279^2 .

It is a cyclic number.

It is not a de Polignac number, because 155116460209957 - 2⁴⁷ = 14378971854629 is a prime.

It is a super-2 number, since 2×155116460209957² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155116460209895 and 155116460209904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155116460209157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77558230104978 + 77558230104979.

It is an arithmetic number, because the mean of its divisors is an integer number (77558230104979).

Almost surely, 2^{155116460209957} is an apocalyptic number.

It is an amenable number.

155116460209957 is a deficient number, since it is larger than the sum of its proper divisors (1).

155116460209957 is an equidigital number, since it uses as much as digits as its factorization.

155116460209957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412000, while the sum is 61.

The spelling of 155116460209957 in words is "one hundred fifty-five trillion, one hundred sixteen billion, four hundred sixty million, two hundred nine thousand, nine hundred fifty-seven".