135220926990 has 32 divisors (see below), whose sum is σ = 332445599136. Its totient is φ = 35179427840.

The previous prime is 135220926989. The next prime is 135220927033. The reversal of 135220926990 is 99629022531.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 54966627 + ... + 54969086.

It is an arithmetic number, because the mean of its divisors is an integer number (10388924973).

Almost surely, 2^135220926990 is an apocalyptic number.

135220926990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135220926990 is an abundant number, since it is smaller than the sum of its proper divisors (197224672146).

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

135220926990 is a wasteful number, since it uses less digits than its factorization.

135220926990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109935764.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 135220926990 in words is "one hundred thirty-five billion, two hundred twenty million, nine hundred twenty-six thousand, nine hundred ninety".