83961904850 has 24 divisors (see below), whose sum is σ = 156359437668. Its totient is φ = 33543838400.

The previous prime is 83961904849. The next prime is 83961904861. The reversal of 83961904850 is 5840916938.

It can be written as a sum of positive squares in 6 ways, for example, as 46733360041 + 37228544809 = 216179^2 + 192947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83961904792 and 83961904801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981629 + ... + 1063728.

Almost surely, 2^83961904850 is an apocalyptic number.

83961904850 is a deficient number, since it is larger than the sum of its proper divisors (72397532818).

83961904850 is a wasteful number, since it uses less digits than its factorization.

83961904850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046190 (or 2046185 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 83961904850 in words is "eighty-three billion, nine hundred sixty-one million, nine hundred four thousand, eight hundred fifty".