7500748864 has 56 divisors (see below), whose sum is σ = 17905943360. Its totient is φ = 3045413376.

The previous prime is 7500748861. The next prime is 7500748873. The reversal of 7500748864 is 4688470057.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×7500748864² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7500748861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432087 + ... + 449110.

Almost surely, 2^7500748864 is an apocalyptic number.

It is an amenable number.

7500748864 is an abundant number, since it is smaller than the sum of its proper divisors (10405194496).

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

7500748864 is a wasteful number, since it uses less digits than its factorization.

7500748864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881235 (or 881225 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 7500748864 is about 86606.8638388436. The cubic root of 7500748864 is about 1957.4989673816.

The spelling of 7500748864 in words is "seven billion, five hundred million, seven hundred forty-eight thousand, eight hundred sixty-four".