5616621953 has 2 divisors, whose sum is σ = 5616621954. Its totient is φ = 5616621952.

The previous prime is 5616621937. The next prime is 5616621991. The reversal of 5616621953 is 3591266165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4170188929 + 1446433024 = 64577^2 + 38032^2 .

It is a cyclic number.

It is not a de Polignac number, because 5616621953 - 2⁴ = 5616621937 is a prime.

It is not a weakly prime, because it can be changed into another prime (5616621853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2808310976 + 2808310977.

It is an arithmetic number, because the mean of its divisors is an integer number (2808310977).

Almost surely, 2^5616621953 is an apocalyptic number.

It is an amenable number.

5616621953 is a deficient number, since it is larger than the sum of its proper divisors (1).

5616621953 is an equidigital number, since it uses as much as digits as its factorization.

5616621953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 44.

The square root of 5616621953 is about 74944.1255402984. The cubic root of 5616621953 is about 1777.5632559057.

The spelling of 5616621953 in words is "five billion, six hundred sixteen million, six hundred twenty-one thousand, nine hundred fifty-three".