14575238921 has 2 divisors, whose sum is σ = 14575238922. Its totient is φ = 14575238920.

The previous prime is 14575238837. The next prime is 14575238957. The reversal of 14575238921 is 12983257541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12964099600 + 1611139321 = 113860^2 + 40139^2 .

It is a cyclic number.

It is not a de Polignac number, because 14575238921 - 2¹⁴ = 14575222537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14575238981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7287619460 + 7287619461.

It is an arithmetic number, because the mean of its divisors is an integer number (7287619461).

Almost surely, 2^14575238921 is an apocalyptic number.

It is an amenable number.

14575238921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14575238921 is an equidigital number, since it uses as much as digits as its factorization.

14575238921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 47.

The spelling of 14575238921 in words is "fourteen billion, five hundred seventy-five million, two hundred thirty-eight thousand, nine hundred twenty-one".