135215332551 has 24 divisors (see below), whose sum is σ = 217119966336. Its totient is φ = 80525257920.

The previous prime is 135215332537. The next prime is 135215332573. The reversal of 135215332551 is 155233512531.

135215332551 is a `hidden beast` number, since 1 + 3 + 5 + 21 + 53 + 32 + 551 = 666.

It is not a de Polignac number, because 135215332551 - 2⁶ = 135215332487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135215332591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18636480 + ... + 18643733.

It is an arithmetic number, because the mean of its divisors is an integer number (9046665264).

Almost surely, 2^135215332551 is an apocalyptic number.

135215332551 is a deficient number, since it is larger than the sum of its proper divisors (81904633785).

135215332551 is a wasteful number, since it uses less digits than its factorization.

135215332551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37280263 (or 37280260 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The spelling of 135215332551 in words is "one hundred thirty-five billion, two hundred fifteen million, three hundred thirty-two thousand, five hundred fifty-one".