139685104120845 has 128 divisors (see below), whose sum is σ = 240336019123200. Its totient is φ = 69147277516800.

The previous prime is 139685104120831. The next prime is 139685104120847. The reversal of 139685104120845 is 548021401586931.

It is not a de Polignac number, because 139685104120845 - 2⁹ = 139685104120333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139685104120847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 351668224 + ... + 352065206.

It is an arithmetic number, because the mean of its divisors is an integer number (1877625149400).

Almost surely, 2^{139685104120845} is an apocalyptic number.

139685104120845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139685104120845 is a deficient number, since it is larger than the sum of its proper divisors (100650915002355).

139685104120845 is a wasteful number, since it uses less digits than its factorization.

139685104120845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397351.

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 139685104120845 in words is "one hundred thirty-nine trillion, six hundred eighty-five billion, one hundred four million, one hundred twenty thousand, eight hundred forty-five".