135681234590 has 32 divisors (see below), whose sum is σ = 280451168640. Its totient is φ = 46741860000.

The previous prime is 135681234587. The next prime is 135681234629. The reversal of 135681234590 is 95432186531.

It is a super-2 number, since 2×135681234590² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32457536 + ... + 32461715.

It is an arithmetic number, because the mean of its divisors is an integer number (8764099020).

Almost surely, 2^135681234590 is an apocalyptic number.

135681234590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135681234590 is an abundant number, since it is smaller than the sum of its proper divisors (144769934050).

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

135681234590 is a wasteful number, since it uses less digits than its factorization.

135681234590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64919288.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 135681234590 in words is "one hundred thirty-five billion, six hundred eighty-one million, two hundred thirty-four thousand, five hundred ninety".