21322866862 has 16 divisors (see below), whose sum is σ = 36944433072. Its totient is φ = 9122081920.

The previous prime is 21322866827. The next prime is 21322866919. The reversal of 21322866862 is 26866822312.

It is a happy number.

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, 28506133 + ... + 28506880.

It is an arithmetic number, because the mean of its divisors is an integer number (2309027067).

Almost surely, 2^21322866862 is an apocalyptic number.

21322866862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21322866862 is a deficient number, since it is larger than the sum of its proper divisors (15621566210).

21322866862 is a wasteful number, since it uses less digits than its factorization.

21322866862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57013043.

The product of its digits is 663552, while the sum is 46.

The spelling of 21322866862 in words is "twenty-one billion, three hundred twenty-two million, eight hundred sixty-six thousand, eight hundred sixty-two".