74478452064 has 192 divisors, whose sum is σ = 209454336000. Its totient is φ = 23121027072.

The previous prime is 74478452057. The next prime is 74478452071. The reversal of 74478452064 is 46025487447.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74478452057) and next prime (74478452071).

It is a junction number, because it is equal to n+sod(n) for n = 74478451998 and 74478452016.

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, 12730612 + ... + 12736460.

It is an arithmetic number, because the mean of its divisors is an integer number (1090908000).

Almost surely, 2^74478452064 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 74478452064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104727168000).

74478452064 is an abundant number, since it is smaller than the sum of its proper divisors (134975883936).

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

74478452064 is a wasteful number, since it uses less digits than its factorization.

74478452064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037 (or 6029 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 51.

The spelling of 74478452064 in words is "seventy-four billion, four hundred seventy-eight million, four hundred fifty-two thousand, sixty-four".