21852370156 has 12 divisors (see below), whose sum is σ = 38244115000. Its totient is φ = 10925480160.

The previous prime is 21852370151. The next prime is 21852370159. The reversal of 21852370156 is 65107325812.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21852370151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103110 + ... + 233101.

Almost surely, 2^21852370156 is an apocalyptic number.

It is an amenable number.

21852370156 is a deficient number, since it is larger than the sum of its proper divisors (16391744844).

21852370156 is a wasteful number, since it uses less digits than its factorization.

21852370156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352464 (or 352462 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

Adding to 21852370156 its reverse (65107325812), we get a palindrome (86959695968).

The spelling of 21852370156 in words is "twenty-one billion, eight hundred fifty-two million, three hundred seventy thousand, one hundred fifty-six".