83493386728 has 8 divisors (see below), whose sum is σ = 156550100130. Its totient is φ = 41746693360.

The previous prime is 83493386719. The next prime is 83493386737. The reversal of 83493386728 is 82768339438.

It is an interprime number because it is at equal distance from previous prime (83493386719) and next prime (83493386737).

It can be written as a sum of positive squares in only one way, i.e., 47036066884 + 36457319844 = 216878^2 + 190938^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×83493386728² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5218336663 + ... + 5218336678.

Almost surely, 2^83493386728 is an apocalyptic number.

It is an amenable number.

83493386728 is a deficient number, since it is larger than the sum of its proper divisors (73056713402).

83493386728 is a wasteful number, since it uses less digits than its factorization.

83493386728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436673347 (or 10436673343 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 61.

The spelling of 83493386728 in words is "eighty-three billion, four hundred ninety-three million, three hundred eighty-six thousand, seven hundred twenty-eight".