23977567501 has 2 divisors, whose sum is σ = 23977567502. Its totient is φ = 23977567500.

The previous prime is 23977567487. The next prime is 23977567529. The reversal of 23977567501 is 10576577932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12421102500 + 11556465001 = 111450^2 + 107501^2 .

It is a cyclic number.

It is not a de Polignac number, because 23977567501 - 2¹¹ = 23977565453 is a prime.

It is a super-2 number, since 2×23977567501² (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 (23977567531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11988783750 + 11988783751.

It is an arithmetic number, because the mean of its divisors is an integer number (11988783751).

Almost surely, 2^23977567501 is an apocalyptic number.

It is an amenable number.

23977567501 is a deficient number, since it is larger than the sum of its proper divisors (1).

23977567501 is an equidigital number, since it uses as much as digits as its factorization.

23977567501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2778300, while the sum is 52.

The spelling of 23977567501 in words is "twenty-three billion, nine hundred seventy-seven million, five hundred sixty-seven thousand, five hundred one".