14471761921 has 4 divisors (see below), whose sum is σ = 15323042052. Its totient is φ = 13620481792.

The previous prime is 14471761903. The next prime is 14471761951. The reversal of 14471761921 is 12916717441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12687544321 + 1784217600 = 112639^2 + 42240^2 .

It is a cyclic number.

It is not a de Polignac number, because 14471761921 - 2¹⁹ = 14471237633 is a prime.

It is a super-2 number, since 2×14471761921² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14471761951) 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, 425640040 + ... + 425640073.

It is an arithmetic number, because the mean of its divisors is an integer number (3830760513).

Almost surely, 2^14471761921 is an apocalyptic number.

It is an amenable number.

14471761921 is a deficient number, since it is larger than the sum of its proper divisors (851280131).

14471761921 is an equidigital number, since it uses as much as digits as its factorization.

14471761921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851280130.

The product of its digits is 84672, while the sum is 43.

The spelling of 14471761921 in words is "fourteen billion, four hundred seventy-one million, seven hundred sixty-one thousand, nine hundred twenty-one".