83155233409 has 4 divisors (see below), whose sum is σ = 83156078016. Its totient is φ = 83154388804.

The previous prime is 83155233407. The next prime is 83155233419. The reversal of 83155233409 is 90433255138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83155233409 - 2¹ = 83155233407 is a prime.

It is a super-2 number, since 2×83155233409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83155233407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251629 + ... + 479194.

It is an arithmetic number, because the mean of its divisors is an integer number (20789019504).

Almost surely, 2^83155233409 is an apocalyptic number.

It is an amenable number.

83155233409 is a deficient number, since it is larger than the sum of its proper divisors (844607).

83155233409 is a wasteful number, since it uses less digits than its factorization.

83155233409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844606.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 83155233409 in words is "eighty-three billion, one hundred fifty-five million, two hundred thirty-three thousand, four hundred nine".