74745051768 has 192 divisors, whose sum is σ = 208501413120. Its totient is φ = 24182323200.

The previous prime is 74745051749. The next prime is 74745051781. The reversal of 74745051768 is 86715054747.

74745051768 is a `hidden beast` number, since 7 + 4 + 74 + 50 + 517 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152230003 + ... + 152230493.

It is an arithmetic number, because the mean of its divisors is an integer number (1085944860).

Almost surely, 2^74745051768 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 74745051768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104250706560).

74745051768 is an abundant number, since it is smaller than the sum of its proper divisors (133756361352).

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

74745051768 is a wasteful number, since it uses less digits than its factorization.

74745051768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 74745051768 in words is "seventy-four billion, seven hundred forty-five million, fifty-one thousand, seven hundred sixty-eight".