16027400749 has 4 divisors (see below), whose sum is σ = 16046875936. Its totient is φ = 16007925564.

The previous prime is 16027400747. The next prime is 16027400759. The reversal of 16027400749 is 94700472061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16027400749 - 2¹ = 16027400747 is a prime.

It is a super-2 number, since 2×16027400749² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16027400747) 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, 9736359 + ... + 9738004.

It is an arithmetic number, because the mean of its divisors is an integer number (4011718984).

Almost surely, 2^16027400749 is an apocalyptic number.

It is an amenable number.

16027400749 is a deficient number, since it is larger than the sum of its proper divisors (19475187).

16027400749 is an equidigital number, since it uses as much as digits as its factorization.

16027400749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19475186.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 16027400749 in words is "sixteen billion, twenty-seven million, four hundred thousand, seven hundred forty-nine".