16687083479 has 4 divisors (see below), whose sum is σ = 18204091080. Its totient is φ = 15170075880.

The previous prime is 16687083433. The next prime is 16687083493. The reversal of 16687083479 is 97438078661.

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 16687083479 - 2¹⁶ = 16687017943 is a prime.

It is a super-2 number, since 2×16687083479² (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 (16687083409) 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, 758503784 + ... + 758503805.

It is an arithmetic number, because the mean of its divisors is an integer number (4551022770).

Almost surely, 2^16687083479 is an apocalyptic number.

16687083479 is a deficient number, since it is larger than the sum of its proper divisors (1517007601).

16687083479 is a wasteful number, since it uses less digits than its factorization.

16687083479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517007600.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 16687083479 in words is "sixteen billion, six hundred eighty-seven million, eighty-three thousand, four hundred seventy-nine".