23941990363957 has 2 divisors, whose sum is σ = 23941990363958. Its totient is φ = 23941990363956.

The previous prime is 23941990363927. The next prime is 23941990363969. The reversal of 23941990363957 is 75936309914932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22111681717636 + 1830308646321 = 4702306^2 + 1352889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23941990363957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23941990363927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11970995181978 + 11970995181979.

It is an arithmetic number, because the mean of its divisors is an integer number (11970995181979).

Almost surely, 2^{23941990363957} is an apocalyptic number.

It is an amenable number.

23941990363957 is a deficient number, since it is larger than the sum of its proper divisors (1).

23941990363957 is an equidigital number, since it uses as much as digits as its factorization.

23941990363957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 297606960, while the sum is 70.

The spelling of 23941990363957 in words is "twenty-three trillion, nine hundred forty-one billion, nine hundred ninety million, three hundred sixty-three thousand, nine hundred fifty-seven".