73831028566 has 4 divisors (see below), whose sum is σ = 110746542852. Its totient is φ = 36915514282.

The previous prime is 73831028563. The next prime is 73831028587. The reversal of 73831028566 is 66582013837.

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

It is a super-2 number, since 2×73831028566² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73831028563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18457757140 + ... + 18457757143.

It is an arithmetic number, because the mean of its divisors is an integer number (27686635713).

Almost surely, 2^73831028566 is an apocalyptic number.

73831028566 is a deficient number, since it is larger than the sum of its proper divisors (36915514286).

73831028566 is a wasteful number, since it uses less digits than its factorization.

73831028566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36915514285.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 73831028566 in words is "seventy-three billion, eight hundred thirty-one million, twenty-eight thousand, five hundred sixty-six".