7157064720 has 160 divisors (see below), whose sum is σ = 23948467200. Its totient is φ = 1757693952.

The previous prime is 7157064709. The next prime is 7157064749. The reversal of 7157064720 is 274607517.

It is a super-3 number, since 3×7157064720³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 1492086 + ... + 1496874.

It is an arithmetic number, because the mean of its divisors is an integer number (149677920).

Almost surely, 2^7157064720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7157064720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11974233600).

7157064720 is an abundant number, since it is smaller than the sum of its proper divisors (16791402480).

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

7157064720 is a wasteful number, since it uses less digits than its factorization.

7157064720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297 (or 5291 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 7157064720 is about 84599.4368775585. The cubic root of 7157064720 is about 1927.1328219693.

The spelling of 7157064720 in words is "seven billion, one hundred fifty-seven million, sixty-four thousand, seven hundred twenty".