73911742879 has 24 divisors (see below), whose sum is σ = 80394022800. Its totient is φ = 67920652800.

The previous prime is 73911742871. The next prime is 73911742913. The reversal of 73911742879 is 97824711937.

It is a happy number.

It is not a de Polignac number, because 73911742879 - 2³ = 73911742871 is a prime.

It is a super-2 number, since 2×73911742879² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73911742871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49637767 + ... + 49639255.

It is an arithmetic number, because the mean of its divisors is an integer number (3349750950).

Almost surely, 2^73911742879 is an apocalyptic number.

73911742879 is a deficient number, since it is larger than the sum of its proper divisors (6482279921).

73911742879 is a wasteful number, since it uses less digits than its factorization.

73911742879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635 (or 2622 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 58.

The spelling of 73911742879 in words is "seventy-three billion, nine hundred eleven million, seven hundred forty-two thousand, eight hundred seventy-nine".