461993547961 has 4 divisors (see below), whose sum is σ = 503992961424. Its totient is φ = 419994134500.

The previous prime is 461993547943. The next prime is 461993547973. The reversal of 461993547961 is 169745399164.

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 461993547961 - 2¹¹ = 461993545913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 461993547893 and 461993547902.

It is not an unprimeable number, because it can be changed into a prime (461993547161) 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, 20999706715 + ... + 20999706736.

It is an arithmetic number, because the mean of its divisors is an integer number (125998240356).

Almost surely, 2^461993547961 is an apocalyptic number.

It is an amenable number.

461993547961 is a deficient number, since it is larger than the sum of its proper divisors (41999413463).

461993547961 is a wasteful number, since it uses less digits than its factorization.

461993547961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41999413462.

The product of its digits is 44089920, while the sum is 64.

The spelling of 461993547961 in words is "four hundred sixty-one billion, nine hundred ninety-three million, five hundred forty-seven thousand, nine hundred sixty-one".