420990336783 has 24 divisors (see below), whose sum is σ = 623124627840. Its totient is φ = 273797094480.

The previous prime is 420990336757. The next prime is 420990336827. The reversal of 420990336783 is 387633099024.

It is not a de Polignac number, because 420990336783 - 2²⁰ = 420989288207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420990336883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2956491 + ... + 3095612.

It is an arithmetic number, because the mean of its divisors is an integer number (25963526160).

Almost surely, 2^420990336783 is an apocalyptic number.

420990336783 is a deficient number, since it is larger than the sum of its proper divisors (202134291057).

420990336783 is a wasteful number, since it uses less digits than its factorization.

420990336783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052299 (or 6052296 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 420990336783 in words is "four hundred twenty billion, nine hundred ninety million, three hundred thirty-six thousand, seven hundred eighty-three".