74040073734 has 64 divisors (see below), whose sum is σ = 170439966720. Its totient is φ = 21206052000.

The previous prime is 74040073727. The next prime is 74040073799. The reversal of 74040073734 is 43737004047.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74040073692 and 74040073701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471979 + ... + 608969.

It is an arithmetic number, because the mean of its divisors is an integer number (2663124480).

Almost surely, 2^74040073734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74040073734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85219983360).

74040073734 is an abundant number, since it is smaller than the sum of its proper divisors (96399892986).

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

74040073734 is a wasteful number, since it uses less digits than its factorization.

74040073734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137457.

The product of its (nonzero) digits is 197568, while the sum is 39.

The spelling of 74040073734 in words is "seventy-four billion, forty million, seventy-three thousand, seven hundred thirty-four".