74574447500 has 180 divisors, whose sum is σ = 190194786936. Its totient is φ = 25502400000.

The previous prime is 74574447481. The next prime is 74574447523. The reversal of 74574447500 is 574447547.

It is a super-2 number, since 2×74574447500² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 84647060 + ... + 84647940.

Almost surely, 2^74574447500 is an apocalyptic number.

74574447500 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 74574447500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95097393468).

74574447500 is an abundant number, since it is smaller than the sum of its proper divisors (115620339436).

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

74574447500 is a wasteful number, since it uses less digits than its factorization.

74574447500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 47.

Adding to 74574447500 its sum of digits (47), we get a palindrome (74574447547).

The spelling of 74574447500 in words is "seventy-four billion, five hundred seventy-four million, four hundred forty-seven thousand, five hundred".