261214230072340 has 24 divisors (see below), whose sum is σ = 549047208568320. Its totient is φ = 104390963378208.

The previous prime is 261214230072331. The next prime is 261214230072421. The reversal of 261214230072340 is 43270032412162.

It is a self number, because there is not a number n which added to its sum of digits gives 261214230072340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5920518060 + ... + 5920562179.

It is an arithmetic number, because the mean of its divisors is an integer number (22876967023680).

Almost surely, 2^{261214230072340} is an apocalyptic number.

261214230072340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261214230072340 is an abundant number, since it is smaller than the sum of its proper divisors (287832978495980).

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

261214230072340 is a wasteful number, since it uses less digits than its factorization.

261214230072340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11841081351 (or 11841081349 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 261214230072340 in words is "two hundred sixty-one trillion, two hundred fourteen billion, two hundred thirty million, seventy-two thousand, three hundred forty".