21323150372 has 6 divisors (see below), whose sum is σ = 37315513158. Its totient is φ = 10661575184.

The previous prime is 21323150333. The next prime is 21323150393. The reversal of 21323150372 is 27305132312.

It can be written as a sum of positive squares in only one way, i.e., 18177510976 + 3145639396 = 134824^2 + 56086^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665393793 + ... + 2665393800.

It is an arithmetic number, because the mean of its divisors is an integer number (6219252193).

Almost surely, 2^21323150372 is an apocalyptic number.

It is an amenable number.

21323150372 is a deficient number, since it is larger than the sum of its proper divisors (15992362786).

21323150372 is a wasteful number, since it uses less digits than its factorization.

21323150372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330787597 (or 5330787595 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 21323150372 its reverse (27305132312), we get a palindrome (48628282684).

The spelling of 21323150372 in words is "twenty-one billion, three hundred twenty-three million, one hundred fifty thousand, three hundred seventy-two".