7172336640 has 352 divisors, whose sum is σ = 26873409024. Its totient is φ = 1598423040.

The previous prime is 7172336623. The next prime is 7172336659. The reversal of 7172336640 is 466332717.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4407507 + ... + 4409133.

It is an arithmetic number, because the mean of its divisors is an integer number (76344912).

Almost surely, 2^7172336640 is an apocalyptic number.

7172336640 is a gapful number since it is divisible by the number (70) 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 7172336640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13436704512).

7172336640 is an abundant number, since it is smaller than the sum of its proper divisors (19701072384).

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

7172336640 is a wasteful number, since it uses less digits than its factorization.

7172336640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 7172336640 is about 84689.6489542848. The cubic root of 7172336640 is about 1928.5025692365.

The spelling of 7172336640 in words is "seven billion, one hundred seventy-two million, three hundred thirty-six thousand, six hundred forty".