84217091903 has 16 divisors (see below), whose sum is σ = 101148241920. Its totient is φ = 68601720096.

The previous prime is 84217091869. The next prime is 84217091909. The reversal of 84217091903 is 30919071248.

It is not a de Polignac number, because 84217091903 - 2¹² = 84217087807 is a prime.

It is a super-2 number, since 2×84217091903² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84217091909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3769823 + ... + 3792096.

It is an arithmetic number, because the mean of its divisors is an integer number (6321765120).

Almost surely, 2^84217091903 is an apocalyptic number.

84217091903 is a deficient number, since it is larger than the sum of its proper divisors (16931150017).

84217091903 is a wasteful number, since it uses less digits than its factorization.

84217091903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562006.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 84217091903 in words is "eighty-four billion, two hundred seventeen million, ninety-one thousand, nine hundred three".