12019172057 has 16 divisors (see below), whose sum is σ = 13409856000. Its totient is φ = 10705685760.

The previous prime is 12019172041. The next prime is 12019172069. The reversal of 12019172057 is 75027191021.

It is a cyclic number.

It is not a de Polignac number, because 12019172057 - 2⁴ = 12019172041 is a prime.

It is a super-2 number, since 2×12019172057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12019172357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301319 + ... + 338867.

It is an arithmetic number, because the mean of its divisors is an integer number (838116000).

Almost surely, 2^12019172057 is an apocalyptic number.

12019172057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12019172057 is a deficient number, since it is larger than the sum of its proper divisors (1390683943).

12019172057 is a wasteful number, since it uses less digits than its factorization.

12019172057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38576.

The product of its (nonzero) digits is 8820, while the sum is 35.

The spelling of 12019172057 in words is "twelve billion, nineteen million, one hundred seventy-two thousand, fifty-seven".