841800621664 has 48 divisors (see below), whose sum is σ = 1693467046656. Its totient is φ = 411804265600.

The previous prime is 841800621619. The next prime is 841800621671. The reversal of 841800621664 is 466126008148.

It is a super-2 number, since 2×841800621664² (a number of 25 digits) contains 22 as substring.

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, 1116532 + ... + 1711795.

It is an arithmetic number, because the mean of its divisors is an integer number (35280563472).

Almost surely, 2^841800621664 is an apocalyptic number.

It is an amenable number.

841800621664 is an abundant number, since it is smaller than the sum of its proper divisors (851666424992).

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

841800621664 is a wasteful number, since it uses less digits than its factorization.

841800621664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828539 (or 2828531 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 841800621664 in words is "eight hundred forty-one billion, eight hundred million, six hundred twenty-one thousand, six hundred sixty-four".