2081420646407 has 4 divisors (see below), whose sum is σ = 2148563247936. Its totient is φ = 2014278044880.

The previous prime is 2081420646379. The next prime is 2081420646427. The reversal of 2081420646407 is 7046460241802.

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 2081420646407 - 2³⁰ = 2080346904583 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 (2081420646427) 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, 33571300718 + ... + 33571300779.

It is an arithmetic number, because the mean of its divisors is an integer number (537140811984).

Almost surely, 2^{2081420646407} is an apocalyptic number.

2081420646407 is a deficient number, since it is larger than the sum of its proper divisors (67142601529).

2081420646407 is an equidigital number, since it uses as much as digits as its factorization.

2081420646407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67142601528.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 2081420646407 in words is "two trillion, eighty-one billion, four hundred twenty million, six hundred forty-six thousand, four hundred seven".