420507608567 has 4 divisors (see below), whose sum is σ = 421859723376. Its totient is φ = 419155493760.

The previous prime is 420507608561. The next prime is 420507608641. The reversal of 420507608567 is 765806705024.

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

It is a cyclic number.

It is not a de Polignac number, because 420507608567 - 2⁴ = 420507608551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420507608561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676056938 + ... + 676057559.

It is an arithmetic number, because the mean of its divisors is an integer number (105464930844).

Almost surely, 2^420507608567 is an apocalyptic number.

420507608567 is a deficient number, since it is larger than the sum of its proper divisors (1352114809).

420507608567 is a wasteful number, since it uses less digits than its factorization.

420507608567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352114808.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 420507608567 in words is "four hundred twenty billion, five hundred seven million, six hundred eight thousand, five hundred sixty-seven".