23044020451 has 2 divisors, whose sum is σ = 23044020452. Its totient is φ = 23044020450.

The previous prime is 23044020427. The next prime is 23044020497. The reversal of 23044020451 is 15402044032.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23044020451 - 2⁷ = 23044020323 is a prime.

It is a super-2 number, since 2×23044020451² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23044029451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11522010225 + 11522010226.

It is an arithmetic number, because the mean of its divisors is an integer number (11522010226).

Almost surely, 2^23044020451 is an apocalyptic number.

23044020451 is a deficient number, since it is larger than the sum of its proper divisors (1).

23044020451 is an equidigital number, since it uses as much as digits as its factorization.

23044020451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 23044020451 its reverse (15402044032), we get a palindrome (38446064483).

The spelling of 23044020451 in words is "twenty-three billion, forty-four million, twenty thousand, four hundred fifty-one".