54636121575 has 72 divisors (see below), whose sum is σ = 113187005568. Its totient is φ = 24675531840.

The previous prime is 54636121499. The next prime is 54636121591. The reversal of 54636121575 is 57512163645.

54636121575 is a `hidden beast` number, since 5 + 4 + 6 + 361 + 215 + 75 = 666.

54636121575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54636121575 - 2¹⁴ = 54636105191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54636121575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 78249 + ... + 339698.

It is an arithmetic number, because the mean of its divisors is an integer number (1572041744).

Almost surely, 2^54636121575 is an apocalyptic number.

54636121575 is an abundant number, since it is smaller than the sum of its proper divisors (58550883993).

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

54636121575 is a wasteful number, since it uses less digits than its factorization.

54636121575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418053 (or 418045 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The spelling of 54636121575 in words is "fifty-four billion, six hundred thirty-six million, one hundred twenty-one thousand, five hundred seventy-five".