155120511353377 has 2 divisors, whose sum is σ = 155120511353378. Its totient is φ = 155120511353376.

The previous prime is 155120511353323. The next prime is 155120511353417. The reversal of 155120511353377 is 773353115021551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109329629878561 + 45790881474816 = 10456081^2 + 6766896^2 .

It is a cyclic number.

It is not a de Polignac number, because 155120511353377 - 2²³ = 155120502964769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155120511353377.

It is not a weakly prime, because it can be changed into another prime (155120511353317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77560255676688 + 77560255676689.

It is an arithmetic number, because the mean of its divisors is an integer number (77560255676689).

Almost surely, 2^{155120511353377} is an apocalyptic number.

It is an amenable number.

155120511353377 is a deficient number, since it is larger than the sum of its proper divisors (1).

155120511353377 is an equidigital number, since it uses as much as digits as its factorization.

155120511353377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1653750, while the sum is 49.

The spelling of 155120511353377 in words is "one hundred fifty-five trillion, one hundred twenty billion, five hundred eleven million, three hundred fifty-three thousand, three hundred seventy-seven".