6815601984 has 28 divisors (see below), whose sum is σ = 18032947424. Its totient is φ = 2271867264.

The previous prime is 6815601977. The next prime is 6815602007. The reversal of 6815601984 is 4891065186.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 17748772 + ... + 17749155.

Almost surely, 2^6815601984 is an apocalyptic number.

6815601984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6815601984 is an abundant number, since it is smaller than the sum of its proper divisors (11217345440).

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

6815601984 is a wasteful number, since it uses less digits than its factorization.

6815601984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35497942 (or 35497932 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 6815601984 is about 82556.6592347341. The cubic root of 6815601984 is about 1895.9843150619.

The spelling of 6815601984 in words is "six billion, eight hundred fifteen million, six hundred one thousand, nine hundred eighty-four".