464661643261 has 4 divisors (see below), whose sum is σ = 475467728032. Its totient is φ = 453855558492.

The previous prime is 464661643253. The next prime is 464661643273. The reversal of 464661643261 is 162346166464.

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 464661643261 - 2³ = 464661643253 is a prime.

It is a super-3 number, since 3×464661643261³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464661643291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5403042321 + ... + 5403042406.

It is an arithmetic number, because the mean of its divisors is an integer number (118866932008).

Almost surely, 2^464661643261 is an apocalyptic number.

It is an amenable number.

464661643261 is a deficient number, since it is larger than the sum of its proper divisors (10806084771).

464661643261 is a wasteful number, since it uses less digits than its factorization.

464661643261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10806084770.

The product of its digits is 2985984, while the sum is 49.

The spelling of 464661643261 in words is "four hundred sixty-four billion, six hundred sixty-one million, six hundred forty-three thousand, two hundred sixty-one".