23491877069 has 2 divisors, whose sum is σ = 23491877070. Its totient is φ = 23491877068.

The previous prime is 23491877027. The next prime is 23491877093. The reversal of 23491877069 is 96077819432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23176104169 + 315772900 = 152237^2 + 17770^2 .

It is a cyclic number.

It is not a de Polignac number, because 23491877069 - 2⁸ = 23491876813 is a prime.

It is a super-2 number, since 2×23491877069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23491877009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745938534 + 11745938535.

It is an arithmetic number, because the mean of its divisors is an integer number (11745938535).

Almost surely, 2^23491877069 is an apocalyptic number.

It is an amenable number.

23491877069 is a deficient number, since it is larger than the sum of its proper divisors (1).

23491877069 is an equidigital number, since it uses as much as digits as its factorization.

23491877069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 23491877069 in words is "twenty-three billion, four hundred ninety-one million, eight hundred seventy-seven thousand, sixty-nine".