265640410241642 has 16 divisors (see below), whose sum is σ = 402729859705032. Its totient is φ = 131401468961280.

The previous prime is 265640410241639. The next prime is 265640410241659. The reversal of 265640410241642 is 246142014046562.

265640410241642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 116943872055481 + 148696538186161 = 10814059^2 + 12194119^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086199403 + ... + 1086443934.

Almost surely, 2^{265640410241642} is an apocalyptic number.

265640410241642 is a deficient number, since it is larger than the sum of its proper divisors (137089449463390).

265640410241642 is a wasteful number, since it uses less digits than its factorization.

265640410241642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172643993.

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 265640410241642 in words is "two hundred sixty-five trillion, six hundred forty billion, four hundred ten million, two hundred forty-one thousand, six hundred forty-two".