19929086055 has 24 divisors (see below), whose sum is σ = 34548834528. Its totient is φ = 10627281216.

The previous prime is 19929086053. The next prime is 19929086071. The reversal of 19929086055 is 55068092991.

19929086055 is a `hidden beast` number, since 1 + 9 + 9 + 29 + 0 + 8 + 605 + 5 = 666.

It is not a de Polignac number, because 19929086055 - 2¹ = 19929086053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19929085992 and 19929086010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19929086053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317889 + ... + 375381.

It is an arithmetic number, because the mean of its divisors is an integer number (1439534772).

Almost surely, 2^19929086055 is an apocalyptic number.

19929086055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19929086055 is a deficient number, since it is larger than the sum of its proper divisors (14619748473).

19929086055 is a wasteful number, since it uses less digits than its factorization.

19929086055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65207 (or 65204 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 19929086055 in words is "nineteen billion, nine hundred twenty-nine million, eighty-six thousand, fifty-five".