83893440961 has 16 divisors (see below), whose sum is σ = 94518448128. Its totient is φ = 73770555600.

The previous prime is 83893440931. The next prime is 83893440991. The reversal of 83893440961 is 16904439838.

It is an interprime number because it is at equal distance from previous prime (83893440931) and next prime (83893440991).

It is a cyclic number.

It is not a de Polignac number, because 83893440961 - 2⁵ = 83893440929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83893440931) 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, 652726 + ... + 770608.

It is an arithmetic number, because the mean of its divisors is an integer number (5907403008).

Almost surely, 2^83893440961 is an apocalyptic number.

It is an amenable number.

83893440961 is a deficient number, since it is larger than the sum of its proper divisors (10625007167).

83893440961 is a wasteful number, since it uses less digits than its factorization.

83893440961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120012.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 83893440961 in words is "eighty-three billion, eight hundred ninety-three million, four hundred forty thousand, nine hundred sixty-one".