120115155157 has 2 divisors, whose sum is σ = 120115155158. Its totient is φ = 120115155156.

The previous prime is 120115155031. The next prime is 120115155191. The reversal of 120115155157 is 751551511021.

It is an a-pointer prime, because the next prime (120115155191) can be obtained adding 120115155157 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114037237636 + 6077917521 = 337694^2 + 77961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120115155157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120115155257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60057577578 + 60057577579.

It is an arithmetic number, because the mean of its divisors is an integer number (60057577579).

Almost surely, 2^120115155157 is an apocalyptic number.

It is an amenable number.

120115155157 is a deficient number, since it is larger than the sum of its proper divisors (1).

120115155157 is an equidigital number, since it uses as much as digits as its factorization.

120115155157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8750, while the sum is 34.

Adding to 120115155157 its reverse (751551511021), we get a palindrome (871666666178).

The spelling of 120115155157 in words is "one hundred twenty billion, one hundred fifteen million, one hundred fifty-five thousand, one hundred fifty-seven".