53573117994 has 96 divisors (see below), whose sum is σ = 135583269120. Its totient is φ = 15107558400.

The previous prime is 53573117993. The next prime is 53573118031. The reversal of 53573117994 is 49971137535.

53573117994 is a `hidden beast` number, since 5 + 357 + 31 + 179 + 94 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53573117994.

It is not an unprimeable number, because it can be changed into a prime (53573117993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210159 + ... + 388989.

It is an arithmetic number, because the mean of its divisors is an integer number (1412325720).

Almost surely, 2^53573117994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53573117994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67791634560).

53573117994 is an abundant number, since it is smaller than the sum of its proper divisors (82010151126).

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

53573117994 is a wasteful number, since it uses less digits than its factorization.

53573117994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178956 (or 178953 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 54.

The spelling of 53573117994 in words is "fifty-three billion, five hundred seventy-three million, one hundred seventeen thousand, nine hundred ninety-four".