420816551001 has 16 divisors (see below), whose sum is σ = 699539202048. Its totient is φ = 218606000400.

The previous prime is 420816550949. The next prime is 420816551069. The reversal of 420816551001 is 100155618024.

It is not a de Polignac number, because 420816551001 - 2²³ = 420808162393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (420816550001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910858105 + ... + 910858566.

It is an arithmetic number, because the mean of its divisors is an integer number (43721200128).

Almost surely, 2^420816551001 is an apocalyptic number.

It is an amenable number.

420816551001 is a deficient number, since it is larger than the sum of its proper divisors (278722651047).

420816551001 is a wasteful number, since it uses less digits than its factorization.

420816551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821716692.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 420816551001 in words is "four hundred twenty billion, eight hundred sixteen million, five hundred fifty-one thousand, one".