464643011081 has 4 divisors (see below), whose sum is σ = 484844881152. Its totient is φ = 444441141012.

The previous prime is 464643011051. The next prime is 464643011089. The reversal of 464643011081 is 180110346464.

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 a de Polignac number, because none of the positive numbers 2^k-464643011081 is a prime.

It is a super-3 number, since 3×464643011081³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (464643011089) 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, 10100935001 + ... + 10100935046.

It is an arithmetic number, because the mean of its divisors is an integer number (121211220288).

Almost surely, 2^464643011081 is an apocalyptic number.

It is an amenable number.

464643011081 is a deficient number, since it is larger than the sum of its proper divisors (20201870071).

464643011081 is a wasteful number, since it uses less digits than its factorization.

464643011081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201870070.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 464643011081 in words is "four hundred sixty-four billion, six hundred forty-three million, eleven thousand, eighty-one".