14921899061 has 2 divisors, whose sum is σ = 14921899062. Its totient is φ = 14921899060.

The previous prime is 14921899007. The next prime is 14921899207. The reversal of 14921899061 is 16099812941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12018736900 + 2903162161 = 109630^2 + 53881^2 .

It is a cyclic number.

It is not a de Polignac number, because 14921899061 - 2⁶ = 14921898997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14921899561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7460949530 + 7460949531.

It is an arithmetic number, because the mean of its divisors is an integer number (7460949531).

Almost surely, 2^14921899061 is an apocalyptic number.

It is an amenable number.

14921899061 is a deficient number, since it is larger than the sum of its proper divisors (1).

14921899061 is an equidigital number, since it uses as much as digits as its factorization.

14921899061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 50.

The spelling of 14921899061 in words is "fourteen billion, nine hundred twenty-one million, eight hundred ninety-nine thousand, sixty-one".