155510065513 has 6 divisors (see below), whose sum is σ = 170932551482. Its totient is φ = 141372786720.

The previous prime is 155510065511. The next prime is 155510065517. The reversal of 155510065513 is 315560015551.

It can be written as a sum of positive squares in only one way, i.e., 130041735769 + 25468329744 = 360613^2 + 159588^2 .

It is not a de Polignac number, because 155510065513 - 2¹ = 155510065511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155510065511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642603456 + ... + 642603697.

Almost surely, 2^155510065513 is an apocalyptic number.

It is an amenable number.

155510065513 is a deficient number, since it is larger than the sum of its proper divisors (15422485969).

155510065513 is a wasteful number, since it uses less digits than its factorization.

155510065513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285207175 (or 1285207164 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 155510065513 in words is "one hundred fifty-five billion, five hundred ten million, sixty-five thousand, five hundred thirteen".