21967012862404 has 9 divisors (see below), whose sum is σ = 38442288913357. Its totient is φ = 10983501744304.

The previous prime is 21967012862381. The next prime is 21967012862419. The reversal of 21967012862404 is 40426821076912.

The square root of 21967012862404 is 4686898.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3678731672004 + 18288281190400 = 1918002^2 + 4276480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8202072 + ... + 10545520.

Almost surely, 2^{21967012862404} is an apocalyptic number.

21967012862404 is the 4686898-th square number.

It is an amenable number.

21967012862404 is a deficient number, since it is larger than the sum of its proper divisors (16475276050953).

21967012862404 is an frugal number, since it uses more digits than its factorization.

21967012862404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686902 (or 2343451 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 21967012862404 in words is "twenty-one trillion, nine hundred sixty-seven billion, twelve million, eight hundred sixty-two thousand, four hundred four".