135921679732 has 6 divisors (see below), whose sum is σ = 237862939538. Its totient is φ = 67960839864.

The previous prime is 135921679709. The next prime is 135921679741. The reversal of 135921679732 is 237976129531.

It can be written as a sum of positive squares in only one way, i.e., 105239252836 + 30682426896 = 324406^2 + 175164^2 .

It is a super-3 number, since 3×135921679732³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16990209963 + ... + 16990209970.

Almost surely, 2^135921679732 is an apocalyptic number.

It is an amenable number.

135921679732 is a deficient number, since it is larger than the sum of its proper divisors (101941259806).

135921679732 is a wasteful number, since it uses less digits than its factorization.

135921679732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33980419937 (or 33980419935 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 55.

The spelling of 135921679732 in words is "one hundred thirty-five billion, nine hundred twenty-one million, six hundred seventy-nine thousand, seven hundred thirty-two".