73993404536 has 32 divisors (see below), whose sum is σ = 146951288640. Its totient is φ = 34807953408.

The previous prime is 73993404523. The next prime is 73993404601. The reversal of 73993404536 is 63540439937.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 289265 + ... + 481311.

It is an arithmetic number, because the mean of its divisors is an integer number (4592227770).

Almost surely, 2^73993404536 is an apocalyptic number.

It is an amenable number.

73993404536 is a deficient number, since it is larger than the sum of its proper divisors (72957884104).

73993404536 is a wasteful number, since it uses less digits than its factorization.

73993404536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194903 (or 194899 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 53.

The spelling of 73993404536 in words is "seventy-three billion, nine hundred ninety-three million, four hundred four thousand, five hundred thirty-six".