83978703971 has 8 divisors (see below), whose sum is σ = 89232832944. Its totient is φ = 78759486720.

The previous prime is 83978703967. The next prime is 83978703973. The reversal of 83978703971 is 17930787938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83978703971 - 2² = 83978703967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83978703973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8722970 + ... + 8732591.

It is an arithmetic number, because the mean of its divisors is an integer number (11154104118).

Almost surely, 2^83978703971 is an apocalyptic number.

83978703971 is a deficient number, since it is larger than the sum of its proper divisors (5254128973).

83978703971 is a wasteful number, since it uses less digits than its factorization.

83978703971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17455861.

The product of its (nonzero) digits is 16003008, while the sum is 62.

The spelling of 83978703971 in words is "eighty-three billion, nine hundred seventy-eight million, seven hundred three thousand, nine hundred seventy-one".