23641551977 has 2 divisors, whose sum is σ = 23641551978. Its totient is φ = 23641551976.

The previous prime is 23641551961. The next prime is 23641552049. The reversal of 23641551977 is 77915514632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23451553321 + 189998656 = 153139^2 + 13784^2 .

It is a cyclic number.

It is not a de Polignac number, because 23641551977 - 2⁴ = 23641551961 is a prime.

It is not a weakly prime, because it can be changed into another prime (23641551907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11820775988 + 11820775989.

It is an arithmetic number, because the mean of its divisors is an integer number (11820775989).

Almost surely, 2^23641551977 is an apocalyptic number.

It is an amenable number.

23641551977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23641551977 is an equidigital number, since it uses as much as digits as its factorization.

23641551977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The spelling of 23641551977 in words is "twenty-three billion, six hundred forty-one million, five hundred fifty-one thousand, nine hundred seventy-seven".