23419901977921 has 2 divisors, whose sum is σ = 23419901977922. Its totient is φ = 23419901977920.

The previous prime is 23419901977897. The next prime is 23419901977937. The reversal of 23419901977921 is 12977910991432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20267004568321 + 3152897409600 = 4501889^2 + 1775640^2 .

It is a cyclic number.

It is not a de Polignac number, because 23419901977921 - 2¹⁷ = 23419901846849 is a prime.

It is not a weakly prime, because it can be changed into another prime (23419901972921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11709950988960 + 11709950988961.

It is an arithmetic number, because the mean of its divisors is an integer number (11709950988961).

Almost surely, 2^{23419901977921} is an apocalyptic number.

It is an amenable number.

23419901977921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23419901977921 is an equidigital number, since it uses as much as digits as its factorization.

23419901977921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 64.

The spelling of 23419901977921 in words is "twenty-three trillion, four hundred nineteen billion, nine hundred one million, nine hundred seventy-seven thousand, nine hundred twenty-one".