83811408004 has 9 divisors (see below), whose sum is σ = 146670977271. Its totient is φ = 41905414500.

The previous prime is 83811407983. The next prime is 83811408019. The reversal of 83811408004 is 40080411838.

The square root of 83811408004 is 289502.

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

It is a super-2 number, since 2×83811408004² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 506629 + ... + 651379.

Almost surely, 2^83811408004 is an apocalyptic number.

83811408004 is the 289502-nd square number.

It is an amenable number.

83811408004 is a deficient number, since it is larger than the sum of its proper divisors (62859569267).

83811408004 is an frugal number, since it uses more digits than its factorization.

83811408004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289506 (or 144753 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 83811408004 in words is "eighty-three billion, eight hundred eleven million, four hundred eight thousand, four".