10909064921 has 2 divisors, whose sum is σ = 10909064922. Its totient is φ = 10909064920.

The previous prime is 10909064863. The next prime is 10909064953. The reversal of 10909064921 is 12946090901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6969745225 + 3939319696 = 83485^2 + 62764^2 .

It is a cyclic number.

It is not a de Polignac number, because 10909064921 - 2⁶ = 10909064857 is a prime.

It is not a weakly prime, because it can be changed into another prime (10909064981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5454532460 + 5454532461.

It is an arithmetic number, because the mean of its divisors is an integer number (5454532461).

Almost surely, 2^10909064921 is an apocalyptic number.

It is an amenable number.

10909064921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10909064921 is an equidigital number, since it uses as much as digits as its factorization.

10909064921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 10909064921 in words is "ten billion, nine hundred nine million, sixty-four thousand, nine hundred twenty-one".