137725572706 has 4 divisors (see below), whose sum is σ = 206588359062. Its totient is φ = 68862786352.

The previous prime is 137725572659. The next prime is 137725572731. The reversal of 137725572706 is 607275527731.

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., 134292198681 + 3433374025 = 366459^2 + 58595^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34431393175 + ... + 34431393178.

Almost surely, 2^137725572706 is an apocalyptic number.

137725572706 is a deficient number, since it is larger than the sum of its proper divisors (68862786356).

137725572706 is an equidigital number, since it uses as much as digits as its factorization.

137725572706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68862786355.

The product of its (nonzero) digits is 4321800, while the sum is 52.

The spelling of 137725572706 in words is "one hundred thirty-seven billion, seven hundred twenty-five million, five hundred seventy-two thousand, seven hundred six".