6563156940942 has 16 divisors (see below), whose sum is σ = 15001501579392. Its totient is φ = 1875187697400.

The previous prime is 6563156940889. The next prime is 6563156940943. The reversal of 6563156940942 is 2490496513656.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 78132820684 + ... + 78132820767.

It is an arithmetic number, because the mean of its divisors is an integer number (937593848712).

Almost surely, 2^{6563156940942} is an apocalyptic number.

6563156940942 is an abundant number, since it is smaller than the sum of its proper divisors (8438344638450).

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

6563156940942 is a wasteful number, since it uses less digits than its factorization.

6563156940942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156265641463.

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 6563156940942 in words is "six trillion, five hundred sixty-three billion, one hundred fifty-six million, nine hundred forty thousand, nine hundred forty-two".