641992550336 has 28 divisors (see below), whose sum is σ = 1273979814240. Its totient is φ = 320989762560.

The previous prime is 641992550293. The next prime is 641992550369. The reversal of 641992550336 is 633055299146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300825 + ... + 5420583.

It is an arithmetic number, because the mean of its divisors is an integer number (45499279080).

Almost surely, 2^641992550336 is an apocalyptic number.

It is an amenable number.

641992550336 is a deficient number, since it is larger than the sum of its proper divisors (631987263904).

641992550336 is a wasteful number, since it uses less digits than its factorization.

641992550336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203532 (or 203522 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 53.

The spelling of 641992550336 in words is "six hundred forty-one billion, nine hundred ninety-two million, five hundred fifty thousand, three hundred thirty-six".