83821156708 has 24 divisors (see below), whose sum is σ = 147401727480. Its totient is φ = 41706562560.

The previous prime is 83821156687. The next prime is 83821156717. The reversal of 83821156708 is 80765112838.

It can be written as a sum of positive squares in 4 ways, for example, as 25377127204 + 58444029504 = 159302^2 + 241752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1884210 + ... + 1928182.

It is an arithmetic number, because the mean of its divisors is an integer number (6141738645).

Almost surely, 2^83821156708 is an apocalyptic number.

It is an amenable number.

83821156708 is a deficient number, since it is larger than the sum of its proper divisors (63580570772).

83821156708 is a wasteful number, since it uses less digits than its factorization.

83821156708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46287 (or 46285 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 83821156708 in words is "eighty-three billion, eight hundred twenty-one million, one hundred fifty-six thousand, seven hundred eight".