6563156940940 has 12 divisors (see below), whose sum is σ = 13782629576016. Its totient is φ = 2625262776368.

The previous prime is 6563156940889. The next prime is 6563156940943. The reversal of 6563156940940 is 490496513656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6563156940943) 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, 164078923504 + ... + 164078923543.

It is an arithmetic number, because the mean of its divisors is an integer number (1148552464668).

Almost surely, 2^{6563156940940} is an apocalyptic number.

It is an amenable number.

6563156940940 is an abundant number, since it is smaller than the sum of its proper divisors (7219472635076).

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

6563156940940 is a wasteful number, since it uses less digits than its factorization.

6563156940940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328157847056 (or 328157847054 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 58.

The spelling of 6563156940940 in words is "six trillion, five hundred sixty-three billion, one hundred fifty-six million, nine hundred forty thousand, nine hundred forty".