461635666445661 has 8 divisors (see below), whose sum is σ = 619590475053504. Its totient is φ = 305718984400800.

The previous prime is 461635666445651. The next prime is 461635666445669. The reversal of 461635666445661 is 166544666536164.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 461635666445661 - 2³⁸ = 461360788538717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461635666445669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509531640216 + ... + 509531641121.

It is an arithmetic number, because the mean of its divisors is an integer number (77448809381688).

Almost surely, 2^{461635666445661} is an apocalyptic number.

It is an amenable number.

461635666445661 is a deficient number, since it is larger than the sum of its proper divisors (157954808607843).

461635666445661 is a wasteful number, since it uses less digits than its factorization.

461635666445661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019063281491.

The product of its digits is 1343692800, while the sum is 69.

The spelling of 461635666445661 in words is "four hundred sixty-one trillion, six hundred thirty-five billion, six hundred sixty-six million, four hundred forty-five thousand, six hundred sixty-one".