445680086365138 has 4 divisors (see below), whose sum is σ = 668520129547710. Its totient is φ = 222840043182568.

The previous prime is 445680086365091. The next prime is 445680086365229. The reversal of 445680086365138 is 831563680086544.

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., 327018650493649 + 118661435871489 = 18083657^2 + 10893183^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111420021591283 + ... + 111420021591286.

Almost surely, 2^{445680086365138} is an apocalyptic number.

445680086365138 is a deficient number, since it is larger than the sum of its proper divisors (222840043182572).

445680086365138 is a wasteful number, since it uses less digits than its factorization.

445680086365138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222840043182571.

The product of its (nonzero) digits is 398131200, while the sum is 67.

The spelling of 445680086365138 in words is "four hundred forty-five trillion, six hundred eighty billion, eighty-six million, three hundred sixty-five thousand, one hundred thirty-eight".