6999772472 has 128 divisors (see below), whose sum is σ = 17146183680. Its totient is φ = 2599344000.

The previous prime is 6999772453. The next prime is 6999772529. The reversal of 6999772472 is 2742779996.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1276697 + ... + 1282167.

It is an arithmetic number, because the mean of its divisors is an integer number (133954560).

Almost surely, 2^6999772472 is an apocalyptic number.

6999772472 is a gapful number since it is divisible by the number (62) 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 6999772472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8573091840).

6999772472 is an abundant number, since it is smaller than the sum of its proper divisors (10146411208).

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

6999772472 is a wasteful number, since it uses less digits than its factorization.

6999772472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593 (or 5589 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 62.

The square root of 6999772472 is about 83664.6429024830. The cubic root of 6999772472 is about 1912.9104565761.

The spelling of 6999772472 in words is "six billion, nine hundred ninety-nine million, seven hundred seventy-two thousand, four hundred seventy-two".