19450677699 has 24 divisors (see below), whose sum is σ = 28309291920. Its totient is φ = 12868684992.

The previous prime is 19450677679. The next prime is 19450677767. The reversal of 19450677699 is 99677605491.

It is not a de Polignac number, because 19450677699 - 2⁸ = 19450677443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19450677679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865497 + ... + 887685.

It is an arithmetic number, because the mean of its divisors is an integer number (1179553830).

Almost surely, 2^19450677699 is an apocalyptic number.

19450677699 is a deficient number, since it is larger than the sum of its proper divisors (8858614221).

19450677699 is a wasteful number, since it uses less digits than its factorization.

19450677699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22931 (or 22928 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 19450677699 in words is "nineteen billion, four hundred fifty million, six hundred seventy-seven thousand, six hundred ninety-nine".