139511768385 has 32 divisors (see below), whose sum is σ = 243613899648. Its totient is φ = 67613611520.

The previous prime is 139511768381. The next prime is 139511768413. The reversal of 139511768385 is 583867115931.

It is a happy number.

It is not a de Polignac number, because 139511768385 - 2² = 139511768381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139511768381) 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, 218179 + ... + 571511.

It is an arithmetic number, because the mean of its divisors is an integer number (7612934364).

Almost surely, 2^139511768385 is an apocalyptic number.

139511768385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139511768385 is a deficient number, since it is larger than the sum of its proper divisors (104102131263).

139511768385 is a wasteful number, since it uses less digits than its factorization.

139511768385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355745.

The product of its digits is 5443200, while the sum is 57.

The spelling of 139511768385 in words is "one hundred thirty-nine billion, five hundred eleven million, seven hundred sixty-eight thousand, three hundred eighty-five".