135972465922 has 4 divisors (see below), whose sum is σ = 203958698886. Its totient is φ = 67986232960.

The previous prime is 135972465913. The next prime is 135972465929. The reversal of 135972465922 is 229564279531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 135115791561 + 856674361 = 367581^2 + 29269^2 .

It is a super-2 number, since 2×135972465922² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135972465929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33993116479 + ... + 33993116482.

Almost surely, 2^135972465922 is an apocalyptic number.

135972465922 is a deficient number, since it is larger than the sum of its proper divisors (67986232964).

135972465922 is an equidigital number, since it uses as much as digits as its factorization.

135972465922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67986232963.

The product of its digits is 8164800, while the sum is 55.

The spelling of 135972465922 in words is "one hundred thirty-five billion, nine hundred seventy-two million, four hundred sixty-five thousand, nine hundred twenty-two".