139412268665 has 16 divisors (see below), whose sum is σ = 171491936400. Its totient is φ = 108766006272.

The previous prime is 139412268641. The next prime is 139412268689. The reversal of 139412268665 is 566862214931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139412268641) and next prime (139412268689).

It can be written as a sum of positive squares in 8 ways, for example, as 2320541584 + 137091727081 = 48172^2 + 370259^2 .

It is a cyclic number.

It is not a de Polignac number, because 139412268665 - 2²⁰ = 139411220089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2113310 + ... + 2178279.

It is an arithmetic number, because the mean of its divisors is an integer number (10718246025).

Almost surely, 2^139412268665 is an apocalyptic number.

It is an amenable number.

139412268665 is a deficient number, since it is larger than the sum of its proper divisors (32079667735).

139412268665 is an equidigital number, since it uses as much as digits as its factorization.

139412268665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291756.

The product of its digits is 3732480, while the sum is 53.

The spelling of 139412268665 in words is "one hundred thirty-nine billion, four hundred twelve million, two hundred sixty-eight thousand, six hundred sixty-five".