83765358728 has 8 divisors (see below), whose sum is σ = 157060047630. Its totient is φ = 41882679360.

The previous prime is 83765358713. The next prime is 83765358811. The reversal of 83765358728 is 82785356738.

It can be written as a sum of positive squares in only one way, i.e., 63190898884 + 20574459844 = 251378^2 + 143438^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5235334913 + ... + 5235334928.

Almost surely, 2^83765358728 is an apocalyptic number.

It is an amenable number.

83765358728 is a deficient number, since it is larger than the sum of its proper divisors (73294688902).

83765358728 is a wasteful number, since it uses less digits than its factorization.

83765358728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470669847 (or 10470669843 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 62.

The spelling of 83765358728 in words is "eighty-three billion, seven hundred sixty-five million, three hundred fifty-eight thousand, seven hundred twenty-eight".