140177428639 has 4 divisors (see below), whose sum is σ = 142553317320. Its totient is φ = 137801539960.

The previous prime is 140177428603. The next prime is 140177428663. The reversal of 140177428639 is 936824771041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140177428639 - 2¹⁵ = 140177395871 is a prime.

It is a super-4 number, since 4×140177428639⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140177428939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187944252 + ... + 1187944369.

It is an arithmetic number, because the mean of its divisors is an integer number (35638329330).

Almost surely, 2^140177428639 is an apocalyptic number.

140177428639 is a deficient number, since it is larger than the sum of its proper divisors (2375888681).

140177428639 is an equidigital number, since it uses as much as digits as its factorization.

140177428639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375888680.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 140177428639 in words is "one hundred forty billion, one hundred seventy-seven million, four hundred twenty-eight thousand, six hundred thirty-nine".