21460931846 has 8 divisors (see below), whose sum is σ = 32371238520. Its totient is φ = 10670519008.

The previous prime is 21460931831. The next prime is 21460931881. The reversal of 21460931846 is 64813906412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21460931797 and 21460931806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29973011 + ... + 29973726.

It is an arithmetic number, because the mean of its divisors is an integer number (4046404815).

Almost surely, 2^21460931846 is an apocalyptic number.

21460931846 is a deficient number, since it is larger than the sum of its proper divisors (10910306674).

21460931846 is a wasteful number, since it uses less digits than its factorization.

21460931846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59946918.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 21460931846 in words is "twenty-one billion, four hundred sixty million, nine hundred thirty-one thousand, eight hundred forty-six".