245760485981 has 2 divisors, whose sum is σ = 245760485982. Its totient is φ = 245760485980.

The previous prime is 245760485963. The next prime is 245760485987. The reversal of 245760485981 is 189584067542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242909993881 + 2850492100 = 492859^2 + 53390^2 .

It is a cyclic number.

It is not a de Polignac number, because 245760485981 - 2²⁶ = 245693377117 is a prime.

It is a super-2 number, since 2×245760485981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245760485981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245760485987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122880242990 + 122880242991.

It is an arithmetic number, because the mean of its divisors is an integer number (122880242991).

Almost surely, 2^245760485981 is an apocalyptic number.

It is an amenable number.

245760485981 is a deficient number, since it is larger than the sum of its proper divisors (1).

245760485981 is an equidigital number, since it uses as much as digits as its factorization.

245760485981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 245760485981 in words is "two hundred forty-five billion, seven hundred sixty million, four hundred eighty-five thousand, nine hundred eighty-one".