21862826812 has 24 divisors (see below), whose sum is σ = 40515086304. Its totient is φ = 10287232512.

The previous prime is 21862826803. The next prime is 21862826873.

21862826812 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 1065393 + ... + 1085719.

It is an arithmetic number, because the mean of its divisors is an integer number (1688128596).

Almost surely, 2^21862826812 is an apocalyptic number.

It is an amenable number.

21862826812 is a deficient number, since it is larger than the sum of its proper divisors (18652259492).

21862826812 is a wasteful number, since it uses less digits than its factorization.

21862826812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36165 (or 36163 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The spelling of 21862826812 in words is "twenty-one billion, eight hundred sixty-two million, eight hundred twenty-six thousand, eight hundred twelve".