136640719325 has 12 divisors (see below), whose sum is σ = 184837627968. Its totient is φ = 99375068400.

The previous prime is 136640719291. The next prime is 136640719357. The reversal of 136640719325 is 523917046631.

It is not a de Polignac number, because 136640719325 - 2¹⁸ = 136640457181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136640719325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248437397 + ... + 248437946.

It is an arithmetic number, because the mean of its divisors is an integer number (15403135664).

Almost surely, 2^136640719325 is an apocalyptic number.

It is an amenable number.

136640719325 is a deficient number, since it is larger than the sum of its proper divisors (48196908643).

136640719325 is a wasteful number, since it uses less digits than its factorization.

136640719325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496875364 (or 496875359 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 136640719325 in words is "one hundred thirty-six billion, six hundred forty million, seven hundred nineteen thousand, three hundred twenty-five".