7475445747 has 128 divisors (see below), whose sum is σ = 14691532800. Its totient is φ = 3639168000.

The previous prime is 7475445743. The next prime is 7475445749.

It is a happy number.

7475445747 is a `hidden beast` number, since 7 + 4 + 7 + 544 + 57 + 47 = 666.

7475445747 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7475445747 - 2² = 7475445743 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7475445693 and 7475445702.

It is not an unprimeable number, because it can be changed into a prime (7475445743) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3830622 + ... + 3832572.

It is an arithmetic number, because the mean of its divisors is an integer number (114777600).

Almost surely, 2^7475445747 is an apocalyptic number.

7475445747 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7475445747 is a deficient number, since it is larger than the sum of its proper divisors (7216087053).

7475445747 is a wasteful number, since it uses less digits than its factorization.

7475445747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094 (or 2088 counting only the distinct ones).

The product of its digits is 15366400, while the sum is 54.

The square root of 7475445747 is about 86460.6601119839. The cubic root of 7475445747 is about 1955.2953373674.

The spelling of 7475445747 in words is "seven billion, four hundred seventy-five million, four hundred forty-five thousand, seven hundred forty-seven".