464142326521 has 4 divisors (see below), whose sum is σ = 468249780852. Its totient is φ = 460034872192.

The previous prime is 464142326477. The next prime is 464142326533. The reversal of 464142326521 is 125623241464.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2373151225 + 461769175296 = 48715^2 + 679536^2 .

It is a cyclic number.

It is not a de Polignac number, because 464142326521 - 2⁷ = 464142326393 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (464142327521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053726996 + ... + 2053727221.

It is an arithmetic number, because the mean of its divisors is an integer number (117062445213).

Almost surely, 2^464142326521 is an apocalyptic number.

It is an amenable number.

464142326521 is a deficient number, since it is larger than the sum of its proper divisors (4107454331).

464142326521 is a wasteful number, since it uses less digits than its factorization.

464142326521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107454330.

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

Adding to 464142326521 its reverse (125623241464), we get a palindrome (589765567985).

The spelling of 464142326521 in words is "four hundred sixty-four billion, one hundred forty-two million, three hundred twenty-six thousand, five hundred twenty-one".