8151224640 has 112 divisors (see below), whose sum is σ = 27870960768. Its totient is φ = 2006452224.

The previous prime is 8151224639. The next prime is 8151224647. The reversal of 8151224640 is 464221518.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8151224647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314092 + ... + 339051.

It is an arithmetic number, because the mean of its divisors is an integer number (248847864).

Almost surely, 2^8151224640 is an apocalyptic number.

8151224640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8151224640 is an abundant number, since it is smaller than the sum of its proper divisors (19719736128).

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

8151224640 is a wasteful number, since it uses less digits than its factorization.

8151224640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653176 (or 653166 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8151224640 is about 90284.1328252091. The cubic root of 8151224640 is about 2012.5234709915.

The spelling of 8151224640 in words is "eight billion, one hundred fifty-one million, two hundred twenty-four thousand, six hundred forty".