135636697550 has 24 divisors (see below), whose sum is σ = 252919771176. Its totient is φ = 54118009440.

The previous prime is 135636697531. The next prime is 135636697591. The reversal of 135636697550 is 55796636531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3396692 + ... + 3436391.

It is an arithmetic number, because the mean of its divisors is an integer number (10538323799).

Almost surely, 2^135636697550 is an apocalyptic number.

135636697550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135636697550 is a deficient number, since it is larger than the sum of its proper divisors (117283073626).

135636697550 is a wasteful number, since it uses less digits than its factorization.

135636697550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833492 (or 6833487 counting only the distinct ones).

The product of its (nonzero) digits is 15309000, while the sum is 56.

The spelling of 135636697550 in words is "one hundred thirty-five billion, six hundred thirty-six million, six hundred ninety-seven thousand, five hundred fifty".