23403555252391 has 2 divisors, whose sum is σ = 23403555252392. Its totient is φ = 23403555252390.

The previous prime is 23403555252367. The next prime is 23403555252479. The reversal of 23403555252391 is 19325255530432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23403555252391 - 2⁷ = 23403555252263 is a prime.

It is a super-2 number, since 2×23403555252391² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23403555250391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701777626195 + 11701777626196.

It is an arithmetic number, because the mean of its divisors is an integer number (11701777626196).

Almost surely, 2^{23403555252391} is an apocalyptic number.

23403555252391 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403555252391 is an equidigital number, since it uses as much as digits as its factorization.

23403555252391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860000, while the sum is 49.

The spelling of 23403555252391 in words is "twenty-three trillion, four hundred three billion, five hundred fifty-five million, two hundred fifty-two thousand, three hundred ninety-one".