16254907391 has 4 divisors (see below), whose sum is σ = 17211078432. Its totient is φ = 15298736352.

The previous prime is 16254907387. The next prime is 16254907433. The reversal of 16254907391 is 19370945261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16254907391 - 2² = 16254907387 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 (16254907301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478085495 + ... + 478085528.

It is an arithmetic number, because the mean of its divisors is an integer number (4302769608).

Almost surely, 2^16254907391 is an apocalyptic number.

16254907391 is a deficient number, since it is larger than the sum of its proper divisors (956171041).

16254907391 is an equidigital number, since it uses as much as digits as its factorization.

16254907391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956171040.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 16254907391 in words is "sixteen billion, two hundred fifty-four million, nine hundred seven thousand, three hundred ninety-one".