14945000509 has 4 divisors (see below), whose sum is σ = 15824118204. Its totient is φ = 14065882816.

The previous prime is 14945000479. The next prime is 14945000557. The reversal of 14945000509 is 90500054941.

14945000509 = T₉₉₈₁₅ + T₉₉₈₁₆ + T₉₉₈₁₇.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90500054941 = 31 ⋅2919356611.

It can be written as a sum of positive squares in 2 ways, for example, as 13688298009 + 1256702500 = 116997^2 + 35450^2 .

It is a cyclic number.

It is not a de Polignac number, because 14945000509 - 2¹⁷ = 14944869437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14945000009) 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, 439558822 + ... + 439558855.

It is an arithmetic number, because the mean of its divisors is an integer number (3956029551).

Almost surely, 2^14945000509 is an apocalyptic number.

14945000509 is the 99817-th centered triangular number.

It is an amenable number.

14945000509 is a deficient number, since it is larger than the sum of its proper divisors (879117695).

14945000509 is an equidigital number, since it uses as much as digits as its factorization.

14945000509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879117694.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 14945000509 in words is "fourteen billion, nine hundred forty-five million, five hundred nine", and thus it is an aban number.