16757780479 has 4 divisors (see below), whose sum is σ = 18281215080. Its totient is φ = 15234345880.

The previous prime is 16757780441. The next prime is 16757780489. The reversal of 16757780479 is 97408775761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97408775761 = 11 ⋅8855343251.

It is a cyclic number.

It is not a de Polignac number, because 16757780479 - 2¹¹ = 16757778431 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 (16757780489) 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, 761717284 + ... + 761717305.

It is an arithmetic number, because the mean of its divisors is an integer number (4570303770).

Almost surely, 2^16757780479 is an apocalyptic number.

16757780479 is a deficient number, since it is larger than the sum of its proper divisors (1523434601).

16757780479 is a wasteful number, since it uses less digits than its factorization.

16757780479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523434600.

The product of its (nonzero) digits is 20744640, while the sum is 61.

The spelling of 16757780479 in words is "sixteen billion, seven hundred fifty-seven million, seven hundred eighty thousand, four hundred seventy-nine".