73919999999 has 4 divisors (see below), whose sum is σ = 76304516160. Its totient is φ = 71535483840.

The previous prime is 73919999983. The next prime is 73920000097. The reversal of 73919999999 is 99999991937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99999991937 = 1039 ⋅96246383.

It is a cyclic number.

It is not a de Polignac number, because 73919999999 - 2⁴ = 73919999983 is a prime.

It is a Duffinian number.

73919999999 is a modest number, since divided by 999999 gives 73919 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73919999899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192258034 + ... + 1192258095.

It is an arithmetic number, because the mean of its divisors is an integer number (19076129040).

Almost surely, 2^73919999999 is an apocalyptic number.

73919999999 is a deficient number, since it is larger than the sum of its proper divisors (2384516161).

73919999999 is a wasteful number, since it uses less digits than its factorization.

73919999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384516160.

The product of its digits is 903981141, while the sum is 83.

The spelling of 73919999999 in words is "seventy-three billion, nine hundred nineteen million, nine hundred ninety-nine thousand, nine hundred ninety-nine".