11947918029 has 8 divisors (see below), whose sum is σ = 16769007840. Its totient is φ = 7546053456.

The previous prime is 11947918009. The next prime is 11947918039. The reversal of 11947918029 is 92081974911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11947918029 - 2⁵ = 11947917997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11947918009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104806242 + ... + 104806355.

It is an arithmetic number, because the mean of its divisors is an integer number (2096125980).

Almost surely, 2^11947918029 is an apocalyptic number.

11947918029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11947918029 is a deficient number, since it is larger than the sum of its proper divisors (4821089811).

11947918029 is a wasteful number, since it uses less digits than its factorization.

11947918029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209612619.

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 11947918029 in words is "eleven billion, nine hundred forty-seven million, nine hundred eighteen thousand, twenty-nine".