73734647744 has 56 divisors (see below), whose sum is σ = 151804591488. Its totient is φ = 35496760320.

The previous prime is 73734647687. The next prime is 73734647759. The reversal of 73734647744 is 44774643737.

It is a self number, because there is not a number n which added to its sum of digits gives 73734647744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296522 + ... + 485174.

Almost surely, 2^73734647744 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 73734647744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75902295744).

73734647744 is an abundant number, since it is smaller than the sum of its proper divisors (78069943744).

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

73734647744 is a wasteful number, since it uses less digits than its factorization.

73734647744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188893 (or 188883 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 56.

The spelling of 73734647744 in words is "seventy-three billion, seven hundred thirty-four million, six hundred forty-seven thousand, seven hundred forty-four".