139405600565 has 32 divisors (see below), whose sum is σ = 220833817344. Its totient is φ = 81790295040.

The previous prime is 139405600561. The next prime is 139405600577. The reversal of 139405600565 is 565006504931.

It is not a de Polignac number, because 139405600565 - 2² = 139405600561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139405600561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10643234 + ... + 10656323.

It is an arithmetic number, because the mean of its divisors is an integer number (6901056792).

Almost surely, 2^139405600565 is an apocalyptic number.

It is an amenable number.

139405600565 is a deficient number, since it is larger than the sum of its proper divisors (81428216779).

139405600565 is a wasteful number, since it uses less digits than its factorization.

139405600565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21299597.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 139405600565 in words is "one hundred thirty-nine billion, four hundred five million, six hundred thousand, five hundred sixty-five".