73690595138 has 4 divisors (see below), whose sum is σ = 110535892710. Its totient is φ = 36845297568.

The previous prime is 73690595117. The next prime is 73690595171. The reversal of 73690595138 is 83159509637.

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., 63283942969 + 10406652169 = 251563^2 + 102013^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18422648783 + ... + 18422648786.

Almost surely, 2^73690595138 is an apocalyptic number.

73690595138 is a deficient number, since it is larger than the sum of its proper divisors (36845297572).

73690595138 is a wasteful number, since it uses less digits than its factorization.

73690595138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36845297571.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 73690595138 in words is "seventy-three billion, six hundred ninety million, five hundred ninety-five thousand, one hundred thirty-eight".