21845876846 has 8 divisors (see below), whose sum is σ = 32872187880. Its totient is φ = 10888480888.

The previous prime is 21845876839. The next prime is 21845876849. The reversal of 21845876846 is 64867854812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21845876849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17227976 + ... + 17229243.

It is an arithmetic number, because the mean of its divisors is an integer number (4109023485).

Almost surely, 2^21845876846 is an apocalyptic number.

21845876846 is a deficient number, since it is larger than the sum of its proper divisors (11026311034).

21845876846 is a wasteful number, since it uses less digits than its factorization.

21845876846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34457538.

The product of its digits is 20643840, while the sum is 59.

The spelling of 21845876846 in words is "twenty-one billion, eight hundred forty-five million, eight hundred seventy-six thousand, eight hundred forty-six".