21831818070 has 64 divisors (see below), whose sum is σ = 52856893440. Its totient is φ = 5770875648.

The previous prime is 21831818053. The next prime is 21831818087. The reversal of 21831818070 is 7081813812.

It is an interprime number because it is at equal distance from previous prime (21831818053) and next prime (21831818087).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1579851 + ... + 1593609.

It is an arithmetic number, because the mean of its divisors is an integer number (825888960).

Almost surely, 2^21831818070 is an apocalyptic number.

21831818070 is an abundant number, since it is smaller than the sum of its proper divisors (31025075370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21831818070 is a wasteful number, since it uses less digits than its factorization.

21831818070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229.

The product of its (nonzero) digits is 21504, while the sum is 39.

The spelling of 21831818070 in words is "twenty-one billion, eight hundred thirty-one million, eight hundred eighteen thousand, seventy".