16379449987 has 4 divisors (see below), whose sum is σ = 16382155816. Its totient is φ = 16376744160.

The previous prime is 16379449981. The next prime is 16379449991. The reversal of 16379449987 is 78994497361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78994497361 = 13 ⋅6076499797.

It is a cyclic number.

It is not a de Polignac number, because 16379449987 - 2³ = 16379449979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16379449981) 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, 1343814 + ... + 1355947.

It is an arithmetic number, because the mean of its divisors is an integer number (4095538954).

Almost surely, 2^16379449987 is an apocalyptic number.

16379449987 is a deficient number, since it is larger than the sum of its proper divisors (2705829).

16379449987 is an equidigital number, since it uses as much as digits as its factorization.

16379449987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705828.

The product of its digits is 82301184, while the sum is 67.

The spelling of 16379449987 in words is "sixteen billion, three hundred seventy-nine million, four hundred forty-nine thousand, nine hundred eighty-seven".