464475251691 has 12 divisors (see below), whose sum is σ = 731900396760. Its totient is φ = 281500152480.

The previous prime is 464475251621. The next prime is 464475251707. The reversal of 464475251691 is 196152574464.

464475251691 is a `hidden beast` number, since 4 + 6 + 4 + 475 + 2 + 5 + 169 + 1 = 666.

It is not a de Polignac number, because 464475251691 - 2¹¹ = 464475249643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (464475251621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2345834506 + ... + 2345834703.

It is an arithmetic number, because the mean of its divisors is an integer number (60991699730).

Almost surely, 2^464475251691 is an apocalyptic number.

464475251691 is a deficient number, since it is larger than the sum of its proper divisors (267425145069).

464475251691 is a wasteful number, since it uses less digits than its factorization.

464475251691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691669226 (or 4691669223 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 464475251691 in words is "four hundred sixty-four billion, four hundred seventy-five million, two hundred fifty-one thousand, six hundred ninety-one".