83775835421 has 16 divisors (see below), whose sum is σ = 88316956800. Its totient is φ = 79313424960.

The previous prime is 83775835399. The next prime is 83775835439. The reversal of 83775835421 is 12453857738.

It is a cyclic number.

It is not a de Polignac number, because 83775835421 - 2¹⁰ = 83775834397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83775831421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926651 + ... + 1013031.

It is an arithmetic number, because the mean of its divisors is an integer number (5519809800).

Almost surely, 2^83775835421 is an apocalyptic number.

It is an amenable number.

83775835421 is a deficient number, since it is larger than the sum of its proper divisors (4541121379).

83775835421 is a wasteful number, since it uses less digits than its factorization.

83775835421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86836.

The product of its digits is 5644800, while the sum is 53.

The spelling of 83775835421 in words is "eighty-three billion, seven hundred seventy-five million, eight hundred thirty-five thousand, four hundred twenty-one".