83478650866783 has 4 divisors (see below), whose sum is σ = 83478675166488. Its totient is φ = 83478626567080.

The previous prime is 83478650866769. The next prime is 83478650866801. The reversal of 83478650866783 is 38766805687438.

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

It is a cyclic number.

It is not a de Polignac number, because 83478650866783 - 2⁴⁵ = 48294278777951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83478650866733) 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, 5938216 + ... + 14220397.

It is an arithmetic number, because the mean of its divisors is an integer number (20869668791622).

Almost surely, 2^{83478650866783} is an apocalyptic number.

83478650866783 is a deficient number, since it is larger than the sum of its proper divisors (24299705).

83478650866783 is a wasteful number, since it uses less digits than its factorization.

83478650866783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24299704.

The product of its (nonzero) digits is 7803371520, while the sum is 79.

The spelling of 83478650866783 in words is "eighty-three trillion, four hundred seventy-eight billion, six hundred fifty million, eight hundred sixty-six thousand, seven hundred eighty-three".