501115553505 has 128 divisors (see below), whose sum is σ = 1051796275200. Its totient is φ = 221520096000.

The previous prime is 501115553461. The next prime is 501115553507. The reversal of 501115553505 is 505355511105.

501115553505 is a `hidden beast` number, since 5 + 0 + 1 + 115 + 5 + 535 + 0 + 5 = 666.

It is not a de Polignac number, because 501115553505 - 2⁷ = 501115553377 is a prime.

It is a super-2 number, since 2×501115553505² (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 501115553505.

It is not an unprimeable number, because it can be changed into a prime (501115553507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42501151 + ... + 42512939.

It is an arithmetic number, because the mean of its divisors is an integer number (8217158400).

Almost surely, 2^501115553505 is an apocalyptic number.

It is an amenable number.

501115553505 is an abundant number, since it is smaller than the sum of its proper divisors (550680721695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501115553505 is a wasteful number, since it uses less digits than its factorization.

501115553505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13292 (or 13286 counting only the distinct ones).

The product of its (nonzero) digits is 46875, while the sum is 36.

The spelling of 501115553505 in words is "five hundred one billion, one hundred fifteen million, five hundred fifty-three thousand, five hundred five".