135777613515 has 32 divisors (see below), whose sum is σ = 232091224320. Its totient is φ = 67579484544.

The previous prime is 135777613501. The next prime is 135777613549. The reversal of 135777613515 is 515316777531.

It is not a de Polignac number, because 135777613515 - 2⁹ = 135777613003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3536224 + ... + 3574413.

It is an arithmetic number, because the mean of its divisors is an integer number (7252850760).

Almost surely, 2^135777613515 is an apocalyptic number.

135777613515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135777613515 is a deficient number, since it is larger than the sum of its proper divisors (96313610805).

135777613515 is a wasteful number, since it uses less digits than its factorization.

135777613515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110731.

The product of its digits is 2315250, while the sum is 51.

The spelling of 135777613515 in words is "one hundred thirty-five billion, seven hundred seventy-seven million, six hundred thirteen thousand, five hundred fifteen".