83021500078 has 32 divisors (see below), whose sum is σ = 138400329312. Its totient is φ = 37032422400.

The previous prime is 83021500039. The next prime is 83021500091. The reversal of 83021500078 is 87000512038.

It is a congruent number.

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, 509650 + ... + 652522.

It is an arithmetic number, because the mean of its divisors is an integer number (4325010291).

Almost surely, 2^83021500078 is an apocalyptic number.

83021500078 is a deficient number, since it is larger than the sum of its proper divisors (55378829234).

83021500078 is a wasteful number, since it uses less digits than its factorization.

83021500078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143380.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 83021500078 in words is "eighty-three billion, twenty-one million, five hundred thousand, seventy-eight".