6421877802 has 40 divisors (see below), whose sum is σ = 14414004000. Its totient is φ = 2137019976.

The previous prime is 6421877779. The next prime is 6421877831. The reversal of 6421877802 is 2087781246.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63949 + ... + 130127.

It is an arithmetic number, because the mean of its divisors is an integer number (360350100).

Almost surely, 2^6421877802 is an apocalyptic number.

6421877802 is an abundant number, since it is smaller than the sum of its proper divisors (7992126198).

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

6421877802 is a wasteful number, since it uses less digits than its factorization.

6421877802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66792 (or 66783 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 6421877802 is about 80136.6196067690. The cubic root of 6421877802 is about 1858.7487057410.

The spelling of 6421877802 in words is "six billion, four hundred twenty-one million, eight hundred seventy-seven thousand, eight hundred two".