140399272638 has 24 divisors (see below), whose sum is σ = 320208868200. Its totient is φ = 44336612304.

The previous prime is 140399272627. The next prime is 140399272639. The reversal of 140399272638 is 836272993041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140399272639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205261753 + ... + 205262436.

It is an arithmetic number, because the mean of its divisors is an integer number (13342036175).

Almost surely, 2^140399272638 is an apocalyptic number.

140399272638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140399272638 is an abundant number, since it is smaller than the sum of its proper divisors (179809595562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140399272638 is a wasteful number, since it uses less digits than its factorization.

140399272638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410524216 (or 410524213 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 140399272638 in words is "one hundred forty billion, three hundred ninety-nine million, two hundred seventy-two thousand, six hundred thirty-eight".