4545140640 has 384 divisors, whose sum is σ = 15476686848. Its totient is φ = 1119191040.

The previous prime is 4545140627. The next prime is 4545140657. The reversal of 4545140640 is 460415454.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46857072 + ... + 46857168.

It is an arithmetic number, because the mean of its divisors is an integer number (40303872).

Almost surely, 2^4545140640 is an apocalyptic number.

4545140640 is a gapful number since it is divisible by the number (40) 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 4545140640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7738343424).

4545140640 is an abundant number, since it is smaller than the sum of its proper divisors (10931546208).

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

4545140640 is a wasteful number, since it uses less digits than its factorization.

4545140640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 4545140640 is about 67417.6582209735. The cubic root of 4545140640 is about 1656.4656792060.

The spelling of 4545140640 in words is "four billion, five hundred forty-five million, one hundred forty thousand, six hundred forty".