428111921291 has 8 divisors (see below), whose sum is σ = 435792287040. Its totient is φ = 420480631872.

The previous prime is 428111921273. The next prime is 428111921297. The reversal of 428111921291 is 192129111824.

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

It is a cyclic number.

It is not a de Polignac number, because 428111921291 - 2⁶ = 428111921227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428111921297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12251480 + ... + 12286373.

It is an arithmetic number, because the mean of its divisors is an integer number (54474035880).

Almost surely, 2^428111921291 is an apocalyptic number.

428111921291 is a deficient number, since it is larger than the sum of its proper divisors (7680365749).

428111921291 is a wasteful number, since it uses less digits than its factorization.

428111921291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24538165.

The product of its digits is 20736, while the sum is 41.

The spelling of 428111921291 in words is "four hundred twenty-eight billion, one hundred eleven million, nine hundred twenty-one thousand, two hundred ninety-one".