73688221579 has 4 divisors (see below), whose sum is σ = 84215110384. Its totient is φ = 63161332776.

The previous prime is 73688221501. The next prime is 73688221591. The reversal of 73688221579 is 97512288637.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73688221579 - 2²³ = 73679832971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73688221279) 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, 5263444392 + ... + 5263444405.

It is an arithmetic number, because the mean of its divisors is an integer number (21053777596).

Almost surely, 2^73688221579 is an apocalyptic number.

73688221579 is a deficient number, since it is larger than the sum of its proper divisors (10526888805).

73688221579 is a wasteful number, since it uses less digits than its factorization.

73688221579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526888804.

The product of its digits is 10160640, while the sum is 58.

The spelling of 73688221579 in words is "seventy-three billion, six hundred eighty-eight million, two hundred twenty-one thousand, five hundred seventy-nine".