420107977801 has 4 divisors (see below), whose sum is σ = 420514666132. Its totient is φ = 419701289472.

The previous prime is 420107977777. The next prime is 420107977871. The reversal of 420107977801 is 108779701024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 278626678201 + 141481299600 = 527851^2 + 376140^2 .

It is a cyclic number.

It is not a de Polignac number, because 420107977801 - 2¹⁷ = 420107846729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420107977871) 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, 203342616 + ... + 203344681.

It is an arithmetic number, because the mean of its divisors is an integer number (105128666533).

Almost surely, 2^420107977801 is an apocalyptic number.

It is an amenable number.

420107977801 is a deficient number, since it is larger than the sum of its proper divisors (406688331).

420107977801 is a wasteful number, since it uses less digits than its factorization.

420107977801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406688330.

The product of its (nonzero) digits is 197568, while the sum is 46.

The spelling of 420107977801 in words is "four hundred twenty billion, one hundred seven million, nine hundred seventy-seven thousand, eight hundred one".