7172968985 has 32 divisors (see below), whose sum is σ = 10623674880. Its totient is φ = 4527502848.

The previous prime is 7172968981. The next prime is 7172968997. The reversal of 7172968985 is 5898692717.

It is a cyclic number.

It is not a de Polignac number, because 7172968985 - 2² = 7172968981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7172968981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141389 + ... + 185301.

It is an arithmetic number, because the mean of its divisors is an integer number (331989840).

Almost surely, 2^7172968985 is an apocalyptic number.

It is an amenable number.

7172968985 is a deficient number, since it is larger than the sum of its proper divisors (3450705895).

7172968985 is a wasteful number, since it uses less digits than its factorization.

7172968985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44297.

The product of its digits is 15240960, while the sum is 62.

The square root of 7172968985 is about 84693.3821794832. The cubic root of 7172968985 is about 1928.5592426835.

The spelling of 7172968985 in words is "seven billion, one hundred seventy-two million, nine hundred sixty-eight thousand, nine hundred eighty-five".