83521681484 has 12 divisors (see below), whose sum is σ = 146604524808. Its totient is φ = 41634674400.

The previous prime is 83521681469. The next prime is 83521681489. The reversal of 83521681484 is 48418612538.

It is not an unprimeable number, because it can be changed into a prime (83521681489) 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, 31540097 + ... + 31542744.

It is an arithmetic number, because the mean of its divisors is an integer number (12217043734).

Almost surely, 2^83521681484 is an apocalyptic number.

It is an amenable number.

83521681484 is a deficient number, since it is larger than the sum of its proper divisors (63082843324).

83521681484 is a wasteful number, since it uses less digits than its factorization.

83521681484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63083176 (or 63083174 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The spelling of 83521681484 in words is "eighty-three billion, five hundred twenty-one million, six hundred eighty-one thousand, four hundred eighty-four".