135771565880 has 32 divisors (see below), whose sum is σ = 318768026400. Its totient is φ = 51947381376.

The previous prime is 135771565859. The next prime is 135771565901. The reversal of 135771565880 is 88565177531.

It is an interprime number because it is at equal distance from previous prime (135771565859) and next prime (135771565901).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73787975 + ... + 73789814.

It is an arithmetic number, because the mean of its divisors is an integer number (9961500825).

Almost surely, 2^135771565880 is an apocalyptic number.

135771565880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135771565880 is an abundant number, since it is smaller than the sum of its proper divisors (182996460520).

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

135771565880 is a wasteful number, since it uses less digits than its factorization.

135771565880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147577823 (or 147577819 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 56.

The spelling of 135771565880 in words is "one hundred thirty-five billion, seven hundred seventy-one million, five hundred sixty-five thousand, eight hundred eighty".