7156451680 has 288 divisors, whose sum is σ = 20479314240. Its totient is φ = 2314137600.

The previous prime is 7156451671. The next prime is 7156451693. The reversal of 7156451680 is 861546517.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65655466 + ... + 65655574.

It is an arithmetic number, because the mean of its divisors is an integer number (71108730).

Almost surely, 2^7156451680 is an apocalyptic number.

7156451680 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 7156451680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10239657120).

7156451680 is an abundant number, since it is smaller than the sum of its proper divisors (13322862560).

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

7156451680 is a wasteful number, since it uses less digits than its factorization.

7156451680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 7156451680 is about 84595.8136080031. The cubic root of 7156451680 is about 1927.0777973987.

The spelling of 7156451680 in words is "seven billion, one hundred fifty-six million, four hundred fifty-one thousand, six hundred eighty".