461261042461 has 4 divisors (see below), whose sum is σ = 469964081052. Its totient is φ = 452558003872.

The previous prime is 461261042453. The next prime is 461261042479. The reversal of 461261042461 is 164240162164.

It is a happy number.

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 121517776836 + 339743265625 = 348594^2 + 582875^2 .

It is a cyclic number.

It is not a de Polignac number, because 461261042461 - 2³ = 461261042453 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 461261042461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461261042491) 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, 4351519216 + ... + 4351519321.

It is an arithmetic number, because the mean of its divisors is an integer number (117491020263).

Almost surely, 2^461261042461 is an apocalyptic number.

It is an amenable number.

461261042461 is a deficient number, since it is larger than the sum of its proper divisors (8703038591).

461261042461 is an equidigital number, since it uses as much as digits as its factorization.

461261042461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703038590.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 461261042461 in words is "four hundred sixty-one billion, two hundred sixty-one million, forty-two thousand, four hundred sixty-one".