461551612431 has 64 divisors (see below), whose sum is σ = 774189158400. Its totient is φ = 238073872896.

The previous prime is 461551612427. The next prime is 461551612463. The reversal of 461551612431 is 134216155164.

It is not a de Polignac number, because 461551612431 - 2² = 461551612427 is a prime.

It is a super-2 number, since 2×461551612431² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 461551612431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461551612471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15754665 + ... + 15783933.

It is an arithmetic number, because the mean of its divisors is an integer number (12096705600).

Almost surely, 2^461551612431 is an apocalyptic number.

461551612431 is a deficient number, since it is larger than the sum of its proper divisors (312637545969).

461551612431 is a wasteful number, since it uses less digits than its factorization.

461551612431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30568.

The product of its digits is 86400, while the sum is 39.

Adding to 461551612431 its reverse (134216155164), we get a palindrome (595767767595).

The spelling of 461551612431 in words is "four hundred sixty-one billion, five hundred fifty-one million, six hundred twelve thousand, four hundred thirty-one".