73221925019 has 4 divisors (see below), whose sum is σ = 73222533720. Its totient is φ = 73221316320.

The previous prime is 73221925001. The next prime is 73221925031. The reversal of 73221925019 is 91052912237.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73221925019 is a prime.

It is a super-2 number, since 2×73221925019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73221925219) 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, 56789 + ... + 386870.

It is an arithmetic number, because the mean of its divisors is an integer number (18305633430).

Almost surely, 2^73221925019 is an apocalyptic number.

73221925019 is a deficient number, since it is larger than the sum of its proper divisors (608701).

73221925019 is a wasteful number, since it uses less digits than its factorization.

73221925019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608700.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 73221925019 in words is "seventy-three billion, two hundred twenty-one million, nine hundred twenty-five thousand, nineteen".