139623549872761 has 16 divisors (see below), whose sum is σ = 143776634012928. Its totient is φ = 135507606825600.

The previous prime is 139623549872747. The next prime is 139623549872791. The reversal of 139623549872761 is 167278945326931.

It is a cyclic number.

It is not a de Polignac number, because 139623549872761 - 2¹³ = 139623549864569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139623549872791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2366451 + ... + 16877416.

It is an arithmetic number, because the mean of its divisors is an integer number (8986039625808).

Almost surely, 2^{139623549872761} is an apocalyptic number.

It is an amenable number.

139623549872761 is a deficient number, since it is larger than the sum of its proper divisors (4153084140167).

139623549872761 is a wasteful number, since it uses less digits than its factorization.

139623549872761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19244832.

The product of its digits is 823011840, while the sum is 73.

The spelling of 139623549872761 in words is "one hundred thirty-nine trillion, six hundred twenty-three billion, five hundred forty-nine million, eight hundred seventy-two thousand, seven hundred sixty-one".