73748643432 has 64 divisors (see below), whose sum is σ = 196239283200. Its totient is φ = 23015669760.

The previous prime is 73748643403. The next prime is 73748643473. The reversal of 73748643432 is 23434684737.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 15 ways as a sum of consecutive naturals, for example, 395257 + ... + 551112.

It is an arithmetic number, because the mean of its divisors is an integer number (3066238800).

Almost surely, 2^73748643432 is an apocalyptic number.

It is an amenable number.

73748643432 is an abundant number, since it is smaller than the sum of its proper divisors (122490639768).

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

73748643432 is a wasteful number, since it uses less digits than its factorization.

73748643432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946586 (or 946582 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 51.

The spelling of 73748643432 in words is "seventy-three billion, seven hundred forty-eight million, six hundred forty-three thousand, four hundred thirty-two".