501406564020623 has 64 divisors (see below), whose sum is σ = 568742711065344. Its totient is φ = 439527137280000.

The previous prime is 501406564020619. The next prime is 501406564020641. The reversal of 501406564020623 is 326020465604105.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 501406564020623 - 2² = 501406564020619 is a prime.

It is a super-2 number, since 2×501406564020623² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501406564020643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2212615523 + ... + 2212842123.

It is an arithmetic number, because the mean of its divisors is an integer number (8886604860396).

Almost surely, 2^{501406564020623} is an apocalyptic number.

501406564020623 is a deficient number, since it is larger than the sum of its proper divisors (67336147044721).

501406564020623 is a wasteful number, since it uses less digits than its factorization.

501406564020623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227636.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 501406564020623 in words is "five hundred one trillion, four hundred six billion, five hundred sixty-four million, twenty thousand, six hundred twenty-three".