83638377889 has 16 divisors (see below), whose sum is σ = 92770562304. Its totient is φ = 74761862400.

The previous prime is 83638377887. The next prime is 83638377931. The reversal of 83638377889 is 98877383638.

It is a cyclic number.

It is not a de Polignac number, because 83638377889 - 2¹ = 83638377887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83638377883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2007817 + ... + 2049049.

It is an arithmetic number, because the mean of its divisors is an integer number (5798160144).

Almost surely, 2^83638377889 is an apocalyptic number.

It is an amenable number.

83638377889 is a deficient number, since it is larger than the sum of its proper divisors (9132184415).

83638377889 is a wasteful number, since it uses less digits than its factorization.

83638377889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44328.

The product of its digits is 292626432, while the sum is 70.

The spelling of 83638377889 in words is "eighty-three billion, six hundred thirty-eight million, three hundred seventy-seven thousand, eight hundred eighty-nine".