7811962052640 has 48 divisors (see below), whose sum is σ = 24607680467328. Its totient is φ = 2083189880576.

The previous prime is 7811962052617. The next prime is 7811962052651. The reversal of 7811962052640 is 462502691187.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×7811962052640² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8137459992 + ... + 8137460951.

It is an arithmetic number, because the mean of its divisors is an integer number (512660009736).

Almost surely, 2^{7811962052640} is an apocalyptic number.

It is an amenable number.

7811962052640 is an abundant number, since it is smaller than the sum of its proper divisors (16795718414688).

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

7811962052640 is a wasteful number, since it uses less digits than its factorization.

7811962052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274920961 (or 16274920953 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 7811962052640 in words is "seven trillion, eight hundred eleven billion, nine hundred sixty-two million, fifty-two thousand, six hundred forty".