12191429670 has 64 divisors (see below), whose sum is σ = 33453029376. Its totient is φ = 2785472640.

The previous prime is 12191429669. The next prime is 12191429671. The reversal of 12191429670 is 7692419121.

12191429670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12191429669) and next prime (12191429671).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191429671) 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 31 ways as a sum of consecutive naturals, for example, 570580 + ... + 591560.

It is an arithmetic number, because the mean of its divisors is an integer number (522703584).

Almost surely, 2^12191429670 is an apocalyptic number.

12191429670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12191429670 is an abundant number, since it is smaller than the sum of its proper divisors (21261599706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12191429670 is a wasteful number, since it uses less digits than its factorization.

12191429670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23765.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 12191429670 in words is "twelve billion, one hundred ninety-one million, four hundred twenty-nine thousand, six hundred seventy".