139899156317623 has 4 divisors (see below), whose sum is σ = 139900287332520. Its totient is φ = 139898025302728.

The previous prime is 139899156317621. The next prime is 139899156317647. The reversal of 139899156317623 is 326713651998931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139899156317623 - 2¹ = 139899156317621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139899156317621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565321888 + ... + 565569301.

It is an arithmetic number, because the mean of its divisors is an integer number (34975071833130).

Almost surely, 2^{139899156317623} is an apocalyptic number.

139899156317623 is a deficient number, since it is larger than the sum of its proper divisors (1131014897).

139899156317623 is a wasteful number, since it uses less digits than its factorization.

139899156317623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131014896.

The product of its digits is 396809280, while the sum is 73.

The spelling of 139899156317623 in words is "one hundred thirty-nine trillion, eight hundred ninety-nine billion, one hundred fifty-six million, three hundred seventeen thousand, six hundred twenty-three".