53730733777920 has 440 divisors, whose sum is σ = 192575303008704. Its totient is φ = 14325611249664.

The previous prime is 53730733777873. The next prime is 53730733777921. The reversal of 53730733777920 is 2977733703735.

It is a happy number.

53730733777920 is a `hidden beast` number, since 537 + 3 + 0 + 7 + 3 + 3 + 7 + 7 + 7 + 92 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (53730733777921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3750305797 + ... + 3750320123.

Almost surely, 2^{53730733777920} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53730733777920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96287651504352).

53730733777920 is an abundant number, since it is smaller than the sum of its proper divisors (138844569230784).

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

53730733777920 is a wasteful number, since it uses less digits than its factorization.

53730733777920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23407 (or 23380 counting only the distinct ones).

The product of its (nonzero) digits is 122523030, while the sum is 63.

The spelling of 53730733777920 in words is "fifty-three trillion, seven hundred thirty billion, seven hundred thirty-three million, seven hundred seventy-seven thousand, nine hundred twenty".