7485855840 has 192 divisors, whose sum is σ = 27104414400. Its totient is φ = 1927360512.

The previous prime is 7485855823. The next prime is 7485855859. The reversal of 7485855840 is 485585847.

7485855840 is a `hidden beast` number, since 7 + 4 + 8 + 58 + 5 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95404 + ... + 155156.

It is an arithmetic number, because the mean of its divisors is an integer number (141168825).

Almost surely, 2^7485855840 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 7485855840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13552207200).

7485855840 is an abundant number, since it is smaller than the sum of its proper divisors (19618558560).

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

7485855840 is a wasteful number, since it uses less digits than its factorization.

7485855840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59806 (or 59792 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 54.

The square root of 7485855840 is about 86520.8404952240. The cubic root of 7485855840 is about 1956.2025459267.

The spelling of 7485855840 in words is "seven billion, four hundred eighty-five million, eight hundred fifty-five thousand, eight hundred forty".