20461255413 has 4 divisors (see below), whose sum is σ = 27281673888. Its totient is φ = 13640836940.

The previous prime is 20461255393. The next prime is 20461255417. The reversal of 20461255413 is 31455216402.

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 a cyclic number.

It is not a de Polignac number, because 20461255413 - 2¹⁰ = 20461254389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20461255417) 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, 3410209233 + ... + 3410209238.

It is an arithmetic number, because the mean of its divisors is an integer number (6820418472).

Almost surely, 2^20461255413 is an apocalyptic number.

It is an amenable number.

20461255413 is a deficient number, since it is larger than the sum of its proper divisors (6820418475).

20461255413 is an equidigital number, since it uses as much as digits as its factorization.

20461255413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820418474.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 20461255413 in words is "twenty billion, four hundred sixty-one million, two hundred fifty-five thousand, four hundred thirteen".