260023879489961 has 2 divisors, whose sum is σ = 260023879489962. Its totient is φ = 260023879489960.

The previous prime is 260023879489919. The next prime is 260023879489973. The reversal of 260023879489961 is 169984978320062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204431660161600 + 55592219328361 = 14297960^2 + 7456019^2 .

It is a cyclic number.

It is not a de Polignac number, because 260023879489961 - 2¹⁴ = 260023879473577 is a prime.

It is a super-2 number, since 2×260023879489961² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (260023879489991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130011939744980 + 130011939744981.

It is an arithmetic number, because the mean of its divisors is an integer number (130011939744981).

Almost surely, 2^{260023879489961} is an apocalyptic number.

It is an amenable number.

260023879489961 is a deficient number, since it is larger than the sum of its proper divisors (1).

260023879489961 is an equidigital number, since it uses as much as digits as its factorization.

260023879489961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564350976, while the sum is 74.

The spelling of 260023879489961 in words is "two hundred sixty trillion, twenty-three billion, eight hundred seventy-nine million, four hundred eighty-nine thousand, nine hundred sixty-one".