261535050437254 has 48 divisors (see below), whose sum is σ = 448274921714640. Its totient is φ = 113468787532800.

The previous prime is 261535050437237. The next prime is 261535050437261. The reversal of 261535050437254 is 452734050535162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83185419 + ... + 86272150.

It is an arithmetic number, because the mean of its divisors is an integer number (9339060869055).

Almost surely, 2^{261535050437254} is an apocalyptic number.

261535050437254 is a deficient number, since it is larger than the sum of its proper divisors (186739871277386).

261535050437254 is a wasteful number, since it uses less digits than its factorization.

261535050437254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169457717 (or 169457686 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 52.

The spelling of 261535050437254 in words is "two hundred sixty-one trillion, five hundred thirty-five billion, fifty million, four hundred thirty-seven thousand, two hundred fifty-four".