420933897686 has 4 divisors (see below), whose sum is σ = 631400846532. Its totient is φ = 210466948842.

The previous prime is 420933897667. The next prime is 420933897793. The reversal of 420933897686 is 686798339024.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×420933897686² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105233474420 + ... + 105233474423.

It is an arithmetic number, because the mean of its divisors is an integer number (157850211633).

Almost surely, 2^420933897686 is an apocalyptic number.

420933897686 is a deficient number, since it is larger than the sum of its proper divisors (210466948846).

420933897686 is a wasteful number, since it uses less digits than its factorization.

420933897686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210466948845.

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 420933897686 in words is "four hundred twenty billion, nine hundred thirty-three million, eight hundred ninety-seven thousand, six hundred eighty-six".