261656231015335 has 16 divisors (see below), whose sum is σ = 342902900370240. Its totient is φ = 190501611310080.

The previous prime is 261656231015177. The next prime is 261656231015353. The reversal of 261656231015335 is 533510132656162.

It is not a de Polignac number, because 261656231015335 - 2²³ = 261656222626727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28348449450 + ... + 28348458679.

It is an arithmetic number, because the mean of its divisors is an integer number (21431431273140).

Almost surely, 2^{261656231015335} is an apocalyptic number.

261656231015335 is a deficient number, since it is larger than the sum of its proper divisors (81246669354905).

261656231015335 is a wasteful number, since it uses less digits than its factorization.

261656231015335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56696908218.

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 261656231015335 in words is "two hundred sixty-one trillion, six hundred fifty-six billion, two hundred thirty-one million, fifteen thousand, three hundred thirty-five".