155046640577 has 2 divisors, whose sum is σ = 155046640578. Its totient is φ = 155046640576.

The previous prime is 155046640543. The next prime is 155046640603. The reversal of 155046640577 is 775046640551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149524515856 + 5522124721 = 386684^2 + 74311^2 .

It is a cyclic number.

It is not a de Polignac number, because 155046640577 - 2⁶ = 155046640513 is a prime.

It is not a weakly prime, because it can be changed into another prime (155046640277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77523320288 + 77523320289.

It is an arithmetic number, because the mean of its divisors is an integer number (77523320289).

Almost surely, 2^155046640577 is an apocalyptic number.

It is an amenable number.

155046640577 is a deficient number, since it is larger than the sum of its proper divisors (1).

155046640577 is an equidigital number, since it uses as much as digits as its factorization.

155046640577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 155046640577 in words is "one hundred fifty-five billion, forty-six million, six hundred forty thousand, five hundred seventy-seven".