464591368191 has 4 divisors (see below), whose sum is σ = 619455157592. Its totient is φ = 309727578792.

The previous prime is 464591368183. The next prime is 464591368211. The reversal of 464591368191 is 191863195464.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 464591368191 - 2³ = 464591368183 is a prime.

It is a super-2 number, since 2×464591368191² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464591368691) 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, 77431894696 + ... + 77431894701.

It is an arithmetic number, because the mean of its divisors is an integer number (154863789398).

Almost surely, 2^464591368191 is an apocalyptic number.

464591368191 is a deficient number, since it is larger than the sum of its proper divisors (154863789401).

464591368191 is a wasteful number, since it uses less digits than its factorization.

464591368191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154863789400.

The product of its digits is 5598720, while the sum is 57.

The spelling of 464591368191 in words is "four hundred sixty-four billion, five hundred ninety-one million, three hundred sixty-eight thousand, one hundred ninety-one".