16126779598639 has 4 divisors (see below), whose sum is σ = 16141063726960. Its totient is φ = 16112495470320.

The previous prime is 16126779598577. The next prime is 16126779598691. The reversal of 16126779598639 is 93689597762161.

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 16126779598639 - 2⁷ = 16126779598511 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 (16126779598339) 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, 7142062467 + ... + 7142064724.

It is an arithmetic number, because the mean of its divisors is an integer number (4035265931740).

Almost surely, 2^{16126779598639} is an apocalyptic number.

16126779598639 is a deficient number, since it is larger than the sum of its proper divisors (14284128321).

16126779598639 is a wasteful number, since it uses less digits than its factorization.

16126779598639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14284128320.

The product of its digits is 1851776640, while the sum is 79.

The spelling of 16126779598639 in words is "sixteen trillion, one hundred twenty-six billion, seven hundred seventy-nine million, five hundred ninety-eight thousand, six hundred thirty-nine".