461988298281 has 4 divisors (see below), whose sum is σ = 615984397712. Its totient is φ = 307992198852.

The previous prime is 461988298223. The next prime is 461988298327. The reversal of 461988298281 is 182892889164.

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 461988298281 - 2¹⁷ = 461988167209 is a prime.

It is a super-2 number, since 2×461988298281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (461988278281) 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, 76998049711 + ... + 76998049716.

It is an arithmetic number, because the mean of its divisors is an integer number (153996099428).

Almost surely, 2^461988298281 is an apocalyptic number.

It is an amenable number.

461988298281 is a deficient number, since it is larger than the sum of its proper divisors (153996099431).

461988298281 is a wasteful number, since it uses less digits than its factorization.

461988298281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153996099430.

The product of its digits is 31850496, while the sum is 66.

The spelling of 461988298281 in words is "four hundred sixty-one billion, nine hundred eighty-eight million, two hundred ninety-eight thousand, two hundred eighty-one".