61567571323 has 2 divisors, whose sum is σ = 61567571324. Its totient is φ = 61567571322.

The previous prime is 61567571311. The next prime is 61567571353. The reversal of 61567571323 is 32317576516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61567571323 - 2⁹ = 61567570811 is a prime.

It is a super-2 number, since 2×61567571323² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61567571353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30783785661 + 30783785662.

It is an arithmetic number, because the mean of its divisors is an integer number (30783785662).

Almost surely, 2^61567571323 is an apocalyptic number.

61567571323 is a deficient number, since it is larger than the sum of its proper divisors (1).

61567571323 is an equidigital number, since it uses as much as digits as its factorization.

61567571323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 46.

The spelling of 61567571323 in words is "sixty-one billion, five hundred sixty-seven million, five hundred seventy-one thousand, three hundred twenty-three".