83218402576 has 45 divisors (see below), whose sum is σ = 165358155333. Its totient is φ = 40571264640.

The previous prime is 83218402571. The next prime is 83218402609. The reversal of 83218402576 is 67520481238.

The square root of 83218402576 is 288476.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4009928976 + 79208473600 = 63324^2 + 281440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83218402571) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47309185 + ... + 47310943.

Almost surely, 2^83218402576 is an apocalyptic number.

83218402576 is the 288476-th square number.

It is an amenable number.

83218402576 is a deficient number, since it is larger than the sum of its proper divisors (82139752757).

83218402576 is an frugal number, since it uses more digits than its factorization.

83218402576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 1802 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 83218402576 in words is "eighty-three billion, two hundred eighteen million, four hundred two thousand, five hundred seventy-six".