73748791648 has 48 divisors (see below), whose sum is σ = 166803646464. Its totient is φ = 31441127040.

The previous prime is 73748791607. The next prime is 73748791679. The reversal of 73748791648 is 84619784737.

It is a super-3 number, since 3×73748791648³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 73748791648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819090 + ... + 904657.

It is an arithmetic number, because the mean of its divisors is an integer number (3475075968).

Almost surely, 2^73748791648 is an apocalyptic number.

It is an amenable number.

73748791648 is an abundant number, since it is smaller than the sum of its proper divisors (93054854816).

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

73748791648 is a wasteful number, since it uses less digits than its factorization.

73748791648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723955 (or 1723947 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 64.

The spelling of 73748791648 in words is "seventy-three billion, seven hundred forty-eight million, seven hundred ninety-one thousand, six hundred forty-eight".