139984879551 has 72 divisors (see below), whose sum is σ = 214288912656. Its totient is φ = 81164160000.

The previous prime is 139984879549. The next prime is 139984879589. The reversal of 139984879551 is 155978489931.

It is not a de Polignac number, because 139984879551 - 2¹ = 139984879549 is a prime.

It is a super-3 number, since 3×139984879551³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139984877551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 49975351 + ... + 49978151.

It is an arithmetic number, because the mean of its divisors is an integer number (2976234898).

Almost surely, 2^139984879551 is an apocalyptic number.

139984879551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139984879551 is a deficient number, since it is larger than the sum of its proper divisors (74304033105).

139984879551 is a wasteful number, since it uses less digits than its factorization.

139984879551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985 (or 2913 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 69.

The spelling of 139984879551 in words is "one hundred thirty-nine billion, nine hundred eighty-four million, eight hundred seventy-nine thousand, five hundred fifty-one".