6563953157 has 2 divisors, whose sum is σ = 6563953158. Its totient is φ = 6563953156.

The previous prime is 6563953133. The next prime is 6563953219. The reversal of 6563953157 is 7513593656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5637907396 + 926045761 = 75086^2 + 30431^2 .

It is a cyclic number.

It is not a de Polignac number, because 6563953157 - 2¹² = 6563949061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6563953127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281976578 + 3281976579.

It is an arithmetic number, because the mean of its divisors is an integer number (3281976579).

Almost surely, 2^6563953157 is an apocalyptic number.

It is an amenable number.

6563953157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6563953157 is an equidigital number, since it uses as much as digits as its factorization.

6563953157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2551500, while the sum is 50.

The square root of 6563953157 is about 81018.2273133645. The cubic root of 6563953157 is about 1872.3562771752.

The spelling of 6563953157 in words is "six billion, five hundred sixty-three million, nine hundred fifty-three thousand, one hundred fifty-seven".