501055505461 has 4 divisors (see below), whose sum is σ = 572634863392. Its totient is φ = 429476147532.

The previous prime is 501055505453. The next prime is 501055505551. The reversal of 501055505461 is 164505550105.

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 501055505461 - 2³ = 501055505453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501055505461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501055505861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35789678955 + ... + 35789678968.

It is an arithmetic number, because the mean of its divisors is an integer number (143158715848).

Almost surely, 2^501055505461 is an apocalyptic number.

It is an amenable number.

501055505461 is a deficient number, since it is larger than the sum of its proper divisors (71579357931).

501055505461 is an equidigital number, since it uses as much as digits as its factorization.

501055505461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71579357930.

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 501055505461 in words is "five hundred one billion, fifty-five million, five hundred five thousand, four hundred sixty-one".