261365234254 has 16 divisors (see below), whose sum is σ = 395256879360. Its totient is φ = 129617299000.

The previous prime is 261365234233. The next prime is 261365234269. The reversal of 261365234254 is 452432563162.

It is a self number, because there is not a number n which added to its sum of digits gives 261365234254.

It is a congruent number.

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, 969244 + ... + 1209199.

It is an arithmetic number, because the mean of its divisors is an integer number (24703554960).

Almost surely, 2^261365234254 is an apocalyptic number.

261365234254 is a deficient number, since it is larger than the sum of its proper divisors (133891645106).

261365234254 is a wasteful number, since it uses less digits than its factorization.

261365234254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178935.

The product of its digits is 1036800, while the sum is 43.

The spelling of 261365234254 in words is "two hundred sixty-one billion, three hundred sixty-five million, two hundred thirty-four thousand, two hundred fifty-four".