139749114681 has 72 divisors (see below), whose sum is σ = 229804848000. Its totient is φ = 81677977920.

The previous prime is 139749114671. The next prime is 139749114707. The reversal of 139749114681 is 186411947931.

It is a happy number.

139749114681 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 491 + 146 + 8 + 1 = 666.

It is not a de Polignac number, because 139749114681 - 2¹⁴ = 139749098297 is a prime.

It is a super-2 number, since 2×139749114681² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (139749114611) 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, 32810530 + ... + 32814788.

It is an arithmetic number, because the mean of its divisors is an integer number (3191734000).

Almost surely, 2^139749114681 is an apocalyptic number.

139749114681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139749114681 is a deficient number, since it is larger than the sum of its proper divisors (90055733319).

139749114681 is a wasteful number, since it uses less digits than its factorization.

139749114681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355 (or 5341 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The spelling of 139749114681 in words is "one hundred thirty-nine billion, seven hundred forty-nine million, one hundred fourteen thousand, six hundred eighty-one".