7863947938631 has 8 divisors (see below), whose sum is σ = 7990677118704. Its totient is φ = 7737493959360.

The previous prime is 7863947938607. The next prime is 7863947938633. The reversal of 7863947938631 is 1368397493687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7863947938631 is a prime.

It is a super-2 number, since 2×7863947938631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7863947938633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68742590 + ... + 68856891.

It is an arithmetic number, because the mean of its divisors is an integer number (998834639838).

Almost surely, 2^{7863947938631} is an apocalyptic number.

7863947938631 is a deficient number, since it is larger than the sum of its proper divisors (126729180073).

7863947938631 is a wasteful number, since it uses less digits than its factorization.

7863947938631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137600401.

The product of its digits is 987614208, while the sum is 74.

The spelling of 7863947938631 in words is "seven trillion, eight hundred sixty-three billion, nine hundred forty-seven million, nine hundred thirty-eight thousand, six hundred thirty-one".