421851100115 has 8 divisors (see below), whose sum is σ = 535999044960. Its totient is φ = 317629063552.

The previous prime is 421851100103. The next prime is 421851100133. The reversal of 421851100115 is 511001158124.

It is a happy number.

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 421851100115 - 2¹⁸ = 421850837971 is a prime.

It is an unprimeable number.

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, 2481476975 + ... + 2481477144.

It is an arithmetic number, because the mean of its divisors is an integer number (66999880620).

Almost surely, 2^421851100115 is an apocalyptic number.

421851100115 is a deficient number, since it is larger than the sum of its proper divisors (114147944845).

421851100115 is a wasteful number, since it uses less digits than its factorization.

421851100115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962954141.

The product of its (nonzero) digits is 1600, while the sum is 29.

Adding to 421851100115 its reverse (511001158124), we get a palindrome (932852258239).

The spelling of 421851100115 in words is "four hundred twenty-one billion, eight hundred fifty-one million, one hundred thousand, one hundred fifteen".