259279421537 has 2 divisors, whose sum is σ = 259279421538. Its totient is φ = 259279421536.

The previous prime is 259279421477. The next prime is 259279421551. The reversal of 259279421537 is 735124972952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159252076096 + 100027345441 = 399064^2 + 316271^2 .

It is a cyclic number.

It is not a de Polignac number, because 259279421537 - 2⁶ = 259279421473 is a prime.

It is a super-2 number, since 2×259279421537² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (259279421587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129639710768 + 129639710769.

It is an arithmetic number, because the mean of its divisors is an integer number (129639710769).

Almost surely, 2^259279421537 is an apocalyptic number.

It is an amenable number.

259279421537 is a deficient number, since it is larger than the sum of its proper divisors (1).

259279421537 is an equidigital number, since it uses as much as digits as its factorization.

259279421537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 56.

The spelling of 259279421537 in words is "two hundred fifty-nine billion, two hundred seventy-nine million, four hundred twenty-one thousand, five hundred thirty-seven".