420916717491 has 8 divisors (see below), whose sum is σ = 567008087184. Its totient is φ = 277718246400.

The previous prime is 420916717483. The next prime is 420916717547. The reversal of 420916717491 is 194717619024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420916717491 - 2³ = 420916717483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420916710491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723224310 + ... + 723224891.

It is an arithmetic number, because the mean of its divisors is an integer number (70876010898).

Almost surely, 2^420916717491 is an apocalyptic number.

420916717491 is a deficient number, since it is larger than the sum of its proper divisors (146091369693).

420916717491 is a wasteful number, since it uses less digits than its factorization.

420916717491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446449301.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 420916717491 in words is "four hundred twenty billion, nine hundred sixteen million, seven hundred seventeen thousand, four hundred ninety-one".