74503869840 has 720 divisors, whose sum is σ = 276603724800. Its totient is φ = 17938851840.

The previous prime is 74503869827. The next prime is 74503869851. The reversal of 74503869840 is 4896830547.

74503869840 is a `hidden beast` number, since 7 + 4 + 503 + 8 + 6 + 98 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×74503869840² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 943086921 + ... + 943086999.

It is an arithmetic number, because the mean of its divisors is an integer number (384171840).

Almost surely, 2^74503869840 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 74503869840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138301862400).

74503869840 is an abundant number, since it is smaller than the sum of its proper divisors (202099854960).

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

74503869840 is a wasteful number, since it uses less digits than its factorization.

74503869840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 74503869840 in words is "seventy-four billion, five hundred three million, eight hundred sixty-nine thousand, eight hundred forty".