461256100521 has 4 divisors (see below), whose sum is σ = 615008134032. Its totient is φ = 307504067012.

The previous prime is 461256100493. The next prime is 461256100573. The reversal of 461256100521 is 125001652164.

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 not a de Polignac number, because 461256100521 - 2⁵ = 461256100489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461256100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76876016751 + ... + 76876016756.

It is an arithmetic number, because the mean of its divisors is an integer number (153752033508).

Almost surely, 2^461256100521 is an apocalyptic number.

It is an amenable number.

461256100521 is a deficient number, since it is larger than the sum of its proper divisors (153752033511).

461256100521 is a wasteful number, since it uses less digits than its factorization.

461256100521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153752033510.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 461256100521 its reverse (125001652164), we get a palindrome (586257752685).

The spelling of 461256100521 in words is "four hundred sixty-one billion, two hundred fifty-six million, one hundred thousand, five hundred twenty-one".