7251111216 has 60 divisors (see below), whose sum is σ = 20389301400. Its totient is φ = 2405571840.

The previous prime is 7251111209. The next prime is 7251111229. The reversal of 7251111216 is 6121111527.

It is a super-2 number, since 2×7251111216² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7251111216.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88941 + ... + 149708.

It is an arithmetic number, because the mean of its divisors is an integer number (339821690).

Almost surely, 2^7251111216 is an apocalyptic number.

It is an amenable number.

7251111216 is an abundant number, since it is smaller than the sum of its proper divisors (13138190184).

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

7251111216 is a wasteful number, since it uses less digits than its factorization.

7251111216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238874 (or 238865 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 7251111216 is about 85153.4568646511. The cubic root of 7251111216 is about 1935.5371975626.

The spelling of 7251111216 in words is "seven billion, two hundred fifty-one million, one hundred eleven thousand, two hundred sixteen".