840466263261 has 8 divisors (see below), whose sum is σ = 1134806769280. Its totient is φ = 553218299712.

The previous prime is 840466263229. The next prime is 840466263271. The reversal of 840466263261 is 162362664048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 840466263261 - 2⁵ = 840466263229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 840466263261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840466263211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773135340 + ... + 1773135813.

It is an arithmetic number, because the mean of its divisors is an integer number (141850846160).

Almost surely, 2^840466263261 is an apocalyptic number.

It is an amenable number.

840466263261 is a deficient number, since it is larger than the sum of its proper divisors (294340506019).

840466263261 is a wasteful number, since it uses less digits than its factorization.

840466263261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546271235.

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 840466263261 in words is "eight hundred forty billion, four hundred sixty-six million, two hundred sixty-three thousand, two hundred sixty-one".