245995020451 has 2 divisors, whose sum is σ = 245995020452. Its totient is φ = 245995020450.

The previous prime is 245995020449. The next prime is 245995020487. The reversal of 245995020451 is 154020599542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245995020451 - 2¹ = 245995020449 is a prime.

Together with 245995020449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (245995020421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122997510225 + 122997510226.

It is an arithmetic number, because the mean of its divisors is an integer number (122997510226).

Almost surely, 2^245995020451 is an apocalyptic number.

245995020451 is a deficient number, since it is larger than the sum of its proper divisors (1).

245995020451 is an equidigital number, since it uses as much as digits as its factorization.

245995020451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 245995020451 in words is "two hundred forty-five billion, nine hundred ninety-five million, twenty thousand, four hundred fifty-one".