6415662792728 has 128 divisors (see below), whose sum is σ = 15012366336000. Its totient is φ = 2507743494144.

The previous prime is 6415662792703. The next prime is 6415662792731. The reversal of 6415662792728 is 8272972665146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4581848 + ... + 5815896.

It is an arithmetic number, because the mean of its divisors is an integer number (117284112000).

Almost surely, 2^{6415662792728} is an apocalyptic number.

6415662792728 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6415662792728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7506183168000).

6415662792728 is an abundant number, since it is smaller than the sum of its proper divisors (8596703543272).

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

6415662792728 is a wasteful number, since it uses less digits than its factorization.

6415662792728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234249 (or 1234245 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 65.

The spelling of 6415662792728 in words is "six trillion, four hundred fifteen billion, six hundred sixty-two million, seven hundred ninety-two thousand, seven hundred twenty-eight".