19139431249755 has 32 divisors (see below), whose sum is σ = 34667649069120. Its totient is φ = 10015098612480.

The previous prime is 19139431249723. The next prime is 19139431249777. The reversal of 19139431249755 is 55794213493191.

19139431249755 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 94 + 3 + 1 + 2 + 497 + 55 = 666.

It is not a de Polignac number, because 19139431249755 - 2⁵ = 19139431249723 is a prime.

It is a super-3 number, since 3×19139431249755³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19139431249692 and 19139431249701.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1337479306 + ... + 1337493615.

It is an arithmetic number, because the mean of its divisors is an integer number (1083364033410).

Almost surely, 2^{19139431249755} is an apocalyptic number.

19139431249755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19139431249755 is a deficient number, since it is larger than the sum of its proper divisors (15528217819365).

19139431249755 is a wasteful number, since it uses less digits than its factorization.

19139431249755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674972988 (or 2674972982 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 19139431249755 in words is "nineteen trillion, one hundred thirty-nine billion, four hundred thirty-one million, two hundred forty-nine thousand, seven hundred fifty-five".