7990956540 has 144 divisors (see below), whose sum is σ = 29160069120. Its totient is φ = 1730367360.

The previous prime is 7990956529. The next prime is 7990956541. The reversal of 7990956540 is 456590997.

7990956540 is a `hidden beast` number, since 7 + 9 + 9 + 0 + 95 + 6 + 540 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990956541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142956 + ... + 190835.

It is an arithmetic number, because the mean of its divisors is an integer number (202500480).

Almost surely, 2^7990956540 is an apocalyptic number.

7990956540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7990956540 is an abundant number, since it is smaller than the sum of its proper divisors (21169112580).

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

7990956540 is a wasteful number, since it uses less digits than its factorization.

7990956540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333832 (or 333827 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The square root of 7990956540 is about 89392.1503265248. The cubic root of 7990956540 is about 1999.2460941821.

The spelling of 7990956540 in words is "seven billion, nine hundred ninety million, nine hundred fifty-six thousand, five hundred forty".