16860497493 has 8 divisors (see below), whose sum is σ = 25692186688. Its totient is φ = 9634569984.

The previous prime is 16860497491. The next prime is 16860497503. The reversal of 16860497493 is 39479406861.

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

It is not a de Polignac number, because 16860497493 - 2¹ = 16860497491 is a prime.

It is a super-2 number, since 2×16860497493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16860497491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401440396 + ... + 401440437.

It is an arithmetic number, because the mean of its divisors is an integer number (3211523336).

Almost surely, 2^16860497493 is an apocalyptic number.

It is an amenable number.

16860497493 is a deficient number, since it is larger than the sum of its proper divisors (8831689195).

16860497493 is an equidigital number, since it uses as much as digits as its factorization.

16860497493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802880843.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 16860497493 in words is "sixteen billion, eight hundred sixty million, four hundred ninety-seven thousand, four hundred ninety-three".