83661189883 has 4 divisors (see below), whose sum is σ = 83669489008. Its totient is φ = 83652890760.

The previous prime is 83661189827. The next prime is 83661189919. The reversal of 83661189883 is 38898116638.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38898116638 = 2 ⋅19449058319.

It is a cyclic number.

It is not a de Polignac number, because 83661189883 - 2²⁵ = 83627635451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83662189883) 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, 4134423 + ... + 4154608.

It is an arithmetic number, because the mean of its divisors is an integer number (20917372252).

Almost surely, 2^83661189883 is an apocalyptic number.

83661189883 is a deficient number, since it is larger than the sum of its proper divisors (8299125).

83661189883 is a wasteful number, since it uses less digits than its factorization.

83661189883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8299124.

The product of its digits is 11943936, while the sum is 61.

The spelling of 83661189883 in words is "eighty-three billion, six hundred sixty-one million, one hundred eighty-nine thousand, eight hundred eighty-three".