464640250261 has 8 divisors (see below), whose sum is σ = 515471464800. Its totient is φ = 415240901040.

The previous prime is 464640250231. The next prime is 464640250279. The reversal of 464640250261 is 162052046464.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 464640250261 - 2¹³ = 464640242069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464640250231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357965646 + ... + 357966943.

It is an arithmetic number, because the mean of its divisors is an integer number (64433933100).

Almost surely, 2^464640250261 is an apocalyptic number.

It is an amenable number.

464640250261 is a deficient number, since it is larger than the sum of its proper divisors (50831214539).

464640250261 is a wasteful number, since it uses less digits than its factorization.

464640250261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715932659.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 464640250261 in words is "four hundred sixty-four billion, six hundred forty million, two hundred fifty thousand, two hundred sixty-one".