53665046774784 has 264 divisors, whose sum is σ = 161159153002848. Its totient is φ = 17836768788480.

The previous prime is 53665046774771. The next prime is 53665046774827. The reversal of 53665046774784 is 48747764056635.

53665046774784 is a `hidden beast` number, since 5 + 3 + 6 + 6 + 504 + 6 + 77 + 47 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86033944 + ... + 86655464.

It is an arithmetic number, because the mean of its divisors is an integer number (610451337132).

Almost surely, 2^{53665046774784} is an apocalyptic number.

53665046774784 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53665046774784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80579576501424).

53665046774784 is an abundant number, since it is smaller than the sum of its proper divisors (107494106228064).

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

53665046774784 is an equidigital number, since it uses as much as digits as its factorization.

53665046774784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621903 (or 621873 counting only the distinct ones).

The product of its (nonzero) digits is 2844979200, while the sum is 72.

The spelling of 53665046774784 in words is "fifty-three trillion, six hundred sixty-five billion, forty-six million, seven hundred seventy-four thousand, seven hundred eighty-four".