83956443554 has 4 divisors (see below), whose sum is σ = 125934665334. Its totient is φ = 41978221776.

The previous prime is 83956443551. The next prime is 83956443577. The reversal of 83956443554 is 45534465938.

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

It can be written as a sum of positive squares in only one way, i.e., 45511822225 + 38444621329 = 213335^2 + 196073^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83956443554.

It is not an unprimeable number, because it can be changed into a prime (83956443551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20989110887 + ... + 20989110890.

Almost surely, 2^83956443554 is an apocalyptic number.

83956443554 is a deficient number, since it is larger than the sum of its proper divisors (41978221780).

83956443554 is a wasteful number, since it uses less digits than its factorization.

83956443554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41978221779.

The product of its digits is 31104000, while the sum is 56.

The spelling of 83956443554 in words is "eighty-three billion, nine hundred fifty-six million, four hundred forty-three thousand, five hundred fifty-four".