75061325640 has 256 divisors, whose sum is σ = 264664350720. Its totient is φ = 16672757760.

The previous prime is 75061325627. The next prime is 75061325641. The reversal of 75061325640 is 4652316057.

It is not an unprimeable number, because it can be changed into a prime (75061325641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9053577 + ... + 9061863.

It is an arithmetic number, because the mean of its divisors is an integer number (1033845120).

Almost surely, 2^75061325640 is an apocalyptic number.

75061325640 is a gapful number since it is divisible by the number (70) 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 75061325640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132332175360).

75061325640 is an abundant number, since it is smaller than the sum of its proper divisors (189603025080).

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

75061325640 is a wasteful number, since it uses less digits than its factorization.

75061325640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8612 (or 8608 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 75061325640 in words is "seventy-five billion, sixty-one million, three hundred twenty-five thousand, six hundred forty".