623424654465251 has 2 divisors, whose sum is σ = 623424654465252. Its totient is φ = 623424654465250.

The previous prime is 623424654465187. The next prime is 623424654465259. The reversal of 623424654465251 is 152564456424326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623424654465251 - 2⁶ = 623424654465187 is a prime.

It is a super-2 number, since 2×623424654465251² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (623424654465259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311712327232625 + 311712327232626.

It is an arithmetic number, because the mean of its divisors is an integer number (311712327232626).

Almost surely, 2^{623424654465251} is an apocalyptic number.

623424654465251 is a deficient number, since it is larger than the sum of its proper divisors (1).

623424654465251 is an equidigital number, since it uses as much as digits as its factorization.

623424654465251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888000, while the sum is 59.

The spelling of 623424654465251 in words is "six hundred twenty-three trillion, four hundred twenty-four billion, six hundred fifty-four million, four hundred sixty-five thousand, two hundred fifty-one".