504545955021 has 16 divisors (see below), whose sum is σ = 747511406400. Its totient is φ = 336347807184.

The previous prime is 504545954953. The next prime is 504545955037. The reversal of 504545955021 is 120559545405.

504545955021 is a `hidden beast` number, since 5 + 0 + 4 + 5 + 4 + 595 + 50 + 2 + 1 = 666.

It is not a de Polignac number, because 504545955021 - 2¹³ = 504545946829 is a prime.

It is a super-2 number, since 2×504545955021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504545955521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137250 + ... + 1013868.

It is an arithmetic number, because the mean of its divisors is an integer number (46719462900).

Almost surely, 2^504545955021 is an apocalyptic number.

It is an amenable number.

504545955021 is a deficient number, since it is larger than the sum of its proper divisors (242965451379).

504545955021 is a wasteful number, since it uses less digits than its factorization.

504545955021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897945 (or 897939 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 504545955021 in words is "five hundred four billion, five hundred forty-five million, nine hundred fifty-five thousand, twenty-one".