419869394781 has 64 divisors (see below), whose sum is σ = 632026644480. Its totient is φ = 246358333440.

The previous prime is 419869394779. The next prime is 419869394881. The reversal of 419869394781 is 187493968914.

It is not a de Polignac number, because 419869394781 - 2¹ = 419869394779 is a prime.

It is a super-2 number, since 2×419869394781² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (419869394701) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169780161 + ... + 169782633.

It is an arithmetic number, because the mean of its divisors is an integer number (9875416320).

Almost surely, 2^419869394781 is an apocalyptic number.

It is an amenable number.

419869394781 is a deficient number, since it is larger than the sum of its proper divisors (212157249699).

419869394781 is a wasteful number, since it uses less digits than its factorization.

419869394781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706.

The product of its digits is 94058496, while the sum is 69.

The spelling of 419869394781 in words is "four hundred nineteen billion, eight hundred sixty-nine million, three hundred ninety-four thousand, seven hundred eighty-one".