7662545540 has 48 divisors (see below), whose sum is σ = 17401789440. Its totient is φ = 2817386880.

The previous prime is 7662545491. The next prime is 7662545551. The reversal of 7662545540 is 455452667.

It is a junction number, because it is equal to n+sod(n) for n = 7662545491 and 7662545500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485 + ... + 123795.

It is an arithmetic number, because the mean of its divisors is an integer number (362537280).

Almost surely, 2^7662545540 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 7662545540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8700894720).

7662545540 is an abundant number, since it is smaller than the sum of its proper divisors (9739243900).

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

7662545540 is a wasteful number, since it uses less digits than its factorization.

7662545540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123572 (or 123570 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

The square root of 7662545540 is about 87535.9671220922. The cubic root of 7662545540 is about 1971.4738590481.

The spelling of 7662545540 in words is "seven billion, six hundred sixty-two million, five hundred forty-five thousand, five hundred forty".