245864821627 has 2 divisors, whose sum is σ = 245864821628. Its totient is φ = 245864821626.

The previous prime is 245864821523. The next prime is 245864821633. The reversal of 245864821627 is 726128468542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245864821627 - 2³⁵ = 211505083259 is a prime.

It is not a weakly prime, because it can be changed into another prime (245864821637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122932410813 + 122932410814.

It is an arithmetic number, because the mean of its divisors is an integer number (122932410814).

Almost surely, 2^245864821627 is an apocalyptic number.

245864821627 is a deficient number, since it is larger than the sum of its proper divisors (1).

245864821627 is an equidigital number, since it uses as much as digits as its factorization.

245864821627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 55.

The spelling of 245864821627 in words is "two hundred forty-five billion, eight hundred sixty-four million, eight hundred twenty-one thousand, six hundred twenty-seven".