413678421821 has 16 divisors (see below), whose sum is σ = 500609119104. Its totient is φ = 333708125184.

The previous prime is 413678421809. The next prime is 413678421857. The reversal of 413678421821 is 128124876314.

It is not a de Polignac number, because 413678421821 - 2¹⁸ = 413678159677 is a prime.

It is a super-2 number, since 2×413678421821² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413678421721) 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 15 ways as a sum of consecutive naturals, for example, 2935061 + ... + 3072773.

It is an arithmetic number, because the mean of its divisors is an integer number (31288069944).

Almost surely, 2^413678421821 is an apocalyptic number.

It is an amenable number.

413678421821 is a deficient number, since it is larger than the sum of its proper divisors (86930697283).

413678421821 is a wasteful number, since it uses less digits than its factorization.

413678421821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162980.

The product of its digits is 516096, while the sum is 47.

The spelling of 413678421821 in words is "four hundred thirteen billion, six hundred seventy-eight million, four hundred twenty-one thousand, eight hundred twenty-one".