21860351846 has 16 divisors (see below), whose sum is σ = 34526822400. Its totient is φ = 10351760328.

The previous prime is 21860351797. The next prime is 21860351861. The reversal of 21860351846 is 64815306812.

It is a junction number, because it is equal to n+sod(n) for n = 21860351797 and 21860351806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42011 + ... + 213273.

It is an arithmetic number, because the mean of its divisors is an integer number (2157926400).

Almost surely, 2^21860351846 is an apocalyptic number.

21860351846 is a deficient number, since it is larger than the sum of its proper divisors (12666470554).

21860351846 is a wasteful number, since it uses less digits than its factorization.

21860351846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174643.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 21860351846 in words is "twenty-one billion, eight hundred sixty million, three hundred fifty-one thousand, eight hundred forty-six".