6491722752 has 88 divisors (see below), whose sum is σ = 19225424000. Its totient is φ = 2163898368.

The previous prime is 6491722739. The next prime is 6491722753. The reversal of 6491722752 is 2572271946.

It is a junction number, because it is equal to n+sod(n) for n = 6491722698 and 6491722707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491722753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89752 + ... + 145047.

Almost surely, 2^6491722752 is an apocalyptic number.

It is an amenable number.

6491722752 is an abundant number, since it is smaller than the sum of its proper divisors (12733701248).

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

6491722752 is a wasteful number, since it uses less digits than its factorization.

6491722752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234828 (or 234804 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 6491722752 is about 80571.2278173791. The cubic root of 6491722752 is about 1865.4630644627.

The spelling of 6491722752 in words is "six billion, four hundred ninety-one million, seven hundred twenty-two thousand, seven hundred fifty-two".