23420501077 has 2 divisors, whose sum is σ = 23420501078. Its totient is φ = 23420501076.

The previous prime is 23420501063. The next prime is 23420501149. The reversal of 23420501077 is 77010502432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15200177521 + 8220323556 = 123289^2 + 90666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23420501077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23420504077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710250538 + 11710250539.

It is an arithmetic number, because the mean of its divisors is an integer number (11710250539).

Almost surely, 2^23420501077 is an apocalyptic number.

It is an amenable number.

23420501077 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420501077 is an equidigital number, since it uses as much as digits as its factorization.

23420501077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The spelling of 23420501077 in words is "twenty-three billion, four hundred twenty million, five hundred one thousand, seventy-seven".