83437884905 has 12 divisors (see below), whose sum is σ = 103697124492. Its totient is φ = 64448569920.

The previous prime is 83437884899. The next prime is 83437884917. The reversal of 83437884905 is 50948873438.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6566995369 + 76870889536 = 81037^2 + 277256^2 .

It is not a de Polignac number, because 83437884905 - 2¹⁸ = 83437622761 is a prime.

It is a Duffinian number.

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, 9917066 + ... + 9925475.

It is an arithmetic number, because the mean of its divisors is an integer number (8641427041).

Almost surely, 2^83437884905 is an apocalyptic number.

It is an amenable number.

83437884905 is a deficient number, since it is larger than the sum of its proper divisors (20259239587).

83437884905 is a wasteful number, since it uses less digits than its factorization.

83437884905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19842604 (or 19842575 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 83437884905 in words is "eighty-three billion, four hundred thirty-seven million, eight hundred eighty-four thousand, nine hundred five".