461611211321 has 4 divisors (see below), whose sum is σ = 497119766052. Its totient is φ = 426102656592.

The previous prime is 461611211317. The next prime is 461611211473. The reversal of 461611211321 is 123112116164.

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 121326822400 + 340284388921 = 348320^2 + 583339^2 .

It is a cyclic number.

It is not a de Polignac number, because 461611211321 - 2² = 461611211317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461611211311) 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, 17754277346 + ... + 17754277371.

It is an arithmetic number, because the mean of its divisors is an integer number (124279941513).

Almost surely, 2^461611211321 is an apocalyptic number.

It is an amenable number.

461611211321 is a deficient number, since it is larger than the sum of its proper divisors (35508554731).

461611211321 is a wasteful number, since it uses less digits than its factorization.

461611211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35508554730.

The product of its digits is 1728, while the sum is 29.

Adding to 461611211321 its reverse (123112116164), we get a palindrome (584723327485).

The spelling of 461611211321 in words is "four hundred sixty-one billion, six hundred eleven million, two hundred eleven thousand, three hundred twenty-one".