840261964704 has 48 divisors (see below), whose sum is σ = 2205735906528. Its totient is φ = 280081194752.

The previous prime is 840261964669. The next prime is 840261964741. The reversal of 840261964704 is 407469162048.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×840261964704² (a number of 25 digits) contains 22 as substring.

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, 7183939 + ... + 7299965.

It is an arithmetic number, because the mean of its divisors is an integer number (45952831386).

Almost surely, 2^840261964704 is an apocalyptic number.

It is an amenable number.

840261964704 is an abundant number, since it is smaller than the sum of its proper divisors (1365473941824).

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

840261964704 is a wasteful number, since it uses less digits than its factorization.

840261964704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191477 (or 191469 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 840261964704 in words is "eight hundred forty billion, two hundred sixty-one million, nine hundred sixty-four thousand, seven hundred four".