83008280778 has 32 divisors (see below), whose sum is σ = 173485573632. Its totient is φ = 26428076400.

The previous prime is 83008280759. The next prime is 83008280783. The reversal of 83008280778 is 87708280038.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 83008280778.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339888 + ... + 530603.

It is an arithmetic number, because the mean of its divisors is an integer number (5421424176).

Almost surely, 2^83008280778 is an apocalyptic number.

83008280778 is an abundant number, since it is smaller than the sum of its proper divisors (90477292854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83008280778 is a wasteful number, since it uses less digits than its factorization.

83008280778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871210.

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 83008280778 in words is "eighty-three billion, eight million, two hundred eighty thousand, seven hundred seventy-eight".