7643507472 has 30 divisors (see below), whose sum is σ = 21391205342. Its totient is φ = 2547835776.

The previous prime is 7643507423. The next prime is 7643507489. The reversal of 7643507472 is 2747053467.

7643507472 is a `hidden beast` number, since 76 + 4 + 3 + 507 + 4 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6479606016 + 1163901456 = 80496^2 + 34116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26539813 + ... + 26540100.

Almost surely, 2^7643507472 is an apocalyptic number.

7643507472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7643507472 is an abundant number, since it is smaller than the sum of its proper divisors (13747697870).

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

7643507472 is a wasteful number, since it uses less digits than its factorization.

7643507472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53079927 (or 53079918 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 45.

The square root of 7643507472 is about 87427.1552322275. The cubic root of 7643507472 is about 1969.8397554043.

The spelling of 7643507472 in words is "seven billion, six hundred forty-three million, five hundred seven thousand, four hundred seventy-two".