245374439641 has 2 divisors, whose sum is σ = 245374439642. Its totient is φ = 245374439640.

The previous prime is 245374439627. The next prime is 245374439647. The reversal of 245374439641 is 146934473542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130588999641 + 114785440000 = 361371^2 + 338800^2 .

It is a cyclic number.

It is not a de Polignac number, because 245374439641 - 2³⁵ = 211014701273 is a prime.

It is not a weakly prime, because it can be changed into another prime (245374439647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122687219820 + 122687219821.

It is an arithmetic number, because the mean of its divisors is an integer number (122687219821).

Almost surely, 2^245374439641 is an apocalyptic number.

It is an amenable number.

245374439641 is a deficient number, since it is larger than the sum of its proper divisors (1).

245374439641 is an equidigital number, since it uses as much as digits as its factorization.

245374439641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 52.

The spelling of 245374439641 in words is "two hundred forty-five billion, three hundred seventy-four million, four hundred thirty-nine thousand, six hundred forty-one".