420933897687 has 16 divisors (see below), whose sum is σ = 595097837280. Its totient is φ = 263742845952.

The previous prime is 420933897667. The next prime is 420933897793. The reversal of 420933897687 is 786798339024.

It is not a de Polignac number, because 420933897687 - 2⁸ = 420933897431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420933897647) 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, 5784438 + ... + 5856755.

It is an arithmetic number, because the mean of its divisors is an integer number (37193614830).

Almost surely, 2^420933897687 is an apocalyptic number.

420933897687 is a deficient number, since it is larger than the sum of its proper divisors (174163939593).

420933897687 is a wasteful number, since it uses less digits than its factorization.

420933897687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11641922.

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 420933897687 in words is "four hundred twenty billion, nine hundred thirty-three million, eight hundred ninety-seven thousand, six hundred eighty-seven".