135515772238 has 64 divisors (see below), whose sum is σ = 271736985600. Its totient is φ = 49063472640.

The previous prime is 135515772191. The next prime is 135515772281. The reversal of 135515772238 is 832277515531.

It is a super-2 number, since 2×135515772238² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135515772191 and 135515772200.

It is a congruent number.

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, 120793 + ... + 534436.

It is an arithmetic number, because the mean of its divisors is an integer number (4245890400).

Almost surely, 2^135515772238 is an apocalyptic number.

135515772238 is an abundant number, since it is smaller than the sum of its proper divisors (136221213362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135515772238 is a wasteful number, since it uses less digits than its factorization.

135515772238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655345.

The product of its digits is 1764000, while the sum is 49.

The spelling of 135515772238 in words is "one hundred thirty-five billion, five hundred fifteen million, seven hundred seventy-two thousand, two hundred thirty-eight".