265077400639 has 2 divisors, whose sum is σ = 265077400640. Its totient is φ = 265077400638.

The previous prime is 265077400597. The next prime is 265077400661. The reversal of 265077400639 is 936004770562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265077400639 - 2⁹ = 265077400127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265077400592 and 265077400601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265077400739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132538700319 + 132538700320.

It is an arithmetic number, because the mean of its divisors is an integer number (132538700320).

Almost surely, 2^265077400639 is an apocalyptic number.

265077400639 is a deficient number, since it is larger than the sum of its proper divisors (1).

265077400639 is an equidigital number, since it uses as much as digits as its factorization.

265077400639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 265077400639 in words is "two hundred sixty-five billion, seventy-seven million, four hundred thousand, six hundred thirty-nine".