261655427224734 has 64 divisors (see below), whose sum is σ = 583397004960000. Its totient is φ = 77748847308288.

The previous prime is 261655427224721. The next prime is 261655427224747. The reversal of 261655427224734 is 437422724556162.

It is an interprime number because it is at equal distance from previous prime (261655427224721) and next prime (261655427224747).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8182984 + ... + 24295515.

It is an arithmetic number, because the mean of its divisors is an integer number (9115578202500).

Almost surely, 2^{261655427224734} is an apocalyptic number.

261655427224734 is an abundant number, since it is smaller than the sum of its proper divisors (321741577735266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261655427224734 is a wasteful number, since it uses less digits than its factorization.

261655427224734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32482697.

The product of its digits is 135475200, while the sum is 60.

The spelling of 261655427224734 in words is "two hundred sixty-one trillion, six hundred fifty-five billion, four hundred twenty-seven million, two hundred twenty-four thousand, seven hundred thirty-four".