83897666679838 has 16 divisors (see below), whose sum is σ = 137296388346624. Its totient is φ = 38132720420760.

The previous prime is 83897666679833. The next prime is 83897666679917.

83897666679838 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83897666679833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128798520 + ... + 129448267.

It is an arithmetic number, because the mean of its divisors is an integer number (8581024271664).

Almost surely, 2^{83897666679838} is an apocalyptic number.

83897666679838 is a deficient number, since it is larger than the sum of its proper divisors (53398721666786).

83897666679838 is a wasteful number, since it uses less digits than its factorization.

83897666679838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258261567.

The product of its digits is 189621927936, while the sum is 94.

The spelling of 83897666679838 in words is "eighty-three trillion, eight hundred ninety-seven billion, six hundred sixty-six million, six hundred seventy-nine thousand, eight hundred thirty-eight".