20046451456461 has 4 divisors (see below), whose sum is σ = 26728601941952. Its totient is φ = 13364300970972.

The previous prime is 20046451456403. The next prime is 20046451456483. The reversal of 20046451456461 is 16465415464002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20046451456461 - 2¹³ = 20046451448269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20046451456461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20046451456561) 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, 3341075242741 + ... + 3341075242746.

It is an arithmetic number, because the mean of its divisors is an integer number (6682150485488).

Almost surely, 2^{20046451456461} is an apocalyptic number.

It is an amenable number.

20046451456461 is a deficient number, since it is larger than the sum of its proper divisors (6682150485491).

20046451456461 is an equidigital number, since it uses as much as digits as its factorization.

20046451456461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682150485490.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 20046451456461 in words is "twenty trillion, forty-six billion, four hundred fifty-one million, four hundred fifty-six thousand, four hundred sixty-one".