83354437385 has 4 divisors (see below), whose sum is σ = 100025324868. Its totient is φ = 66683549904.

The previous prime is 83354437373. The next prime is 83354437423. The reversal of 83354437385 is 58373445338.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51010932736 + 32343504649 = 225856^2 + 179843^2 .

It is a cyclic number.

It is not a de Polignac number, because 83354437385 - 2⁶ = 83354437321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8335443734 + ... + 8335443743.

It is an arithmetic number, because the mean of its divisors is an integer number (25006331217).

Almost surely, 2^83354437385 is an apocalyptic number.

It is an amenable number.

83354437385 is a deficient number, since it is larger than the sum of its proper divisors (16670887483).

83354437385 is a wasteful number, since it uses less digits than its factorization.

83354437385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16670887482.

The product of its digits is 14515200, while the sum is 53.

The spelling of 83354437385 in words is "eighty-three billion, three hundred fifty-four million, four hundred thirty-seven thousand, three hundred eighty-five".