501121144454 has 16 divisors (see below), whose sum is σ = 869939059200. Its totient is φ = 212047644744.

The previous prime is 501121144453. The next prime is 501121144471. The reversal of 501121144454 is 454441121105.

It is a super-2 number, since 2×501121144454² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501121144454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501121144453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226545524 + ... + 226547735.

It is an arithmetic number, because the mean of its divisors is an integer number (54371191200).

Almost surely, 2^501121144454 is an apocalyptic number.

501121144454 is a deficient number, since it is larger than the sum of its proper divisors (368817914746).

501121144454 is a wasteful number, since it uses less digits than its factorization.

501121144454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453093347.

The product of its (nonzero) digits is 12800, while the sum is 32.

Adding to 501121144454 its reverse (454441121105), we get a palindrome (955562265559).

The spelling of 501121144454 in words is "five hundred one billion, one hundred twenty-one million, one hundred forty-four thousand, four hundred fifty-four".