74917405440 has 252 divisors, whose sum is σ = 269056167744. Its totient is φ = 19977725952.

The previous prime is 74917405393. The next prime is 74917405463. The reversal of 74917405440 is 4450471947.

74917405440 is a `hidden beast` number, since 7 + 491 + 74 + 0 + 54 + 40 = 666.

It is a super-2 number, since 2×74917405440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 892977 + ... + 973263.

Almost surely, 2^74917405440 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 74917405440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134528083872).

74917405440 is an abundant number, since it is smaller than the sum of its proper divisors (194138762304).

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

74917405440 is an frugal number, since it uses more digits than its factorization.

74917405440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80326 (or 80297 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 74917405440 in words is "seventy-four billion, nine hundred seventeen million, four hundred five thousand, four hundred forty".