9940274371639 has 4 divisors (see below), whose sum is σ = 9942803064040. Its totient is φ = 9937745679240.

The previous prime is 9940274371541. The next prime is 9940274371693. The reversal of 9940274371639 is 9361734720499.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9940274371639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940274341639) 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, 1264340304 + ... + 1264348165.

It is an arithmetic number, because the mean of its divisors is an integer number (2485700766010).

Almost surely, 2^{9940274371639} is an apocalyptic number.

9940274371639 is a deficient number, since it is larger than the sum of its proper divisors (2528692401).

9940274371639 is a wasteful number, since it uses less digits than its factorization.

9940274371639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528692400.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 9940274371639 in words is "nine trillion, nine hundred forty billion, two hundred seventy-four million, three hundred seventy-one thousand, six hundred thirty-nine".