6563156940941 has 4 divisors (see below), whose sum is σ = 6563699317884. Its totient is φ = 6562614564000.

The previous prime is 6563156940889. The next prime is 6563156940943. The reversal of 6563156940941 is 1490496513656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4707363765316 + 1855793175625 = 2169646^2 + 1362275^2 .

It is a cyclic number.

It is not a de Polignac number, because 6563156940941 - 2⁶ = 6563156940877 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 271170320 + ... + 271194521.

It is an arithmetic number, because the mean of its divisors is an integer number (1640924829471).

Almost surely, 2^{6563156940941} is an apocalyptic number.

It is an amenable number.

6563156940941 is a deficient number, since it is larger than the sum of its proper divisors (542376943).

6563156940941 is a wasteful number, since it uses less digits than its factorization.

6563156940941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542376942.

The product of its (nonzero) digits is 20995200, while the sum is 59.

The spelling of 6563156940941 in words is "six trillion, five hundred sixty-three billion, one hundred fifty-six million, nine hundred forty thousand, nine hundred forty-one".