13940723505 has 8 divisors (see below), whose sum is σ = 22305157632. Its totient is φ = 7435052528.

The previous prime is 13940723497. The next prime is 13940723521. The reversal of 13940723505 is 50532704931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13940723505 - 2³ = 13940723497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464690769 + ... + 464690798.

It is an arithmetic number, because the mean of its divisors is an integer number (2788144704).

Almost surely, 2^13940723505 is an apocalyptic number.

13940723505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13940723505 is a deficient number, since it is larger than the sum of its proper divisors (8364434127).

13940723505 is an equidigital number, since it uses as much as digits as its factorization.

13940723505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929381575.

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 13940723505 in words is "thirteen billion, nine hundred forty million, seven hundred twenty-three thousand, five hundred five".