21461348404 has 6 divisors (see below), whose sum is σ = 37557359714. Its totient is φ = 10730674200.

The previous prime is 21461348387. The next prime is 21461348431. The reversal of 21461348404 is 40484316412.

It can be written as a sum of positive squares in only one way, i.e., 19485368100 + 1975980304 = 139590^2 + 44452^2 .

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 as a sum of consecutive naturals, namely, 2682668547 + ... + 2682668554.

Almost surely, 2^21461348404 is an apocalyptic number.

It is an amenable number.

21461348404 is a deficient number, since it is larger than the sum of its proper divisors (16096011310).

21461348404 is a wasteful number, since it uses less digits than its factorization.

21461348404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5365337105 (or 5365337103 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 21461348404 in words is "twenty-one billion, four hundred sixty-one million, three hundred forty-eight thousand, four hundred four".