14461901821 has 2 divisors, whose sum is σ = 14461901822. Its totient is φ = 14461901820.

The previous prime is 14461901803. The next prime is 14461901837. The reversal of 14461901821 is 12810916441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11800476900 + 2661424921 = 108630^2 + 51589^2 .

It is a cyclic number.

It is not a de Polignac number, because 14461901821 - 2⁵ = 14461901789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14461907821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7230950910 + 7230950911.

It is an arithmetic number, because the mean of its divisors is an integer number (7230950911).

Almost surely, 2^14461901821 is an apocalyptic number.

It is an amenable number.

14461901821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14461901821 is an equidigital number, since it uses as much as digits as its factorization.

14461901821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 14461901821 in words is "fourteen billion, four hundred sixty-one million, nine hundred one thousand, eight hundred twenty-one".