265015263887 has 4 divisors (see below), whose sum is σ = 289107560616. Its totient is φ = 240922967160.

The previous prime is 265015263859. The next prime is 265015263889. The reversal of 265015263887 is 788362510562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265015263887 - 2¹² = 265015259791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265015263889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12046148348 + ... + 12046148369.

It is an arithmetic number, because the mean of its divisors is an integer number (72276890154).

Almost surely, 2^265015263887 is an apocalyptic number.

265015263887 is a deficient number, since it is larger than the sum of its proper divisors (24092296729).

265015263887 is a wasteful number, since it uses less digits than its factorization.

265015263887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24092296728.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 265015263887 in words is "two hundred sixty-five billion, fifteen million, two hundred sixty-three thousand, eight hundred eighty-seven".