53169865297920 has 624 divisors, whose sum is σ = 210879519282432. Its totient is φ = 12138613309440.

The previous prime is 53169865297919. The next prime is 53169865297933. The reversal of 53169865297920 is 2979256896135.

It is a happy number.

53169865297920 is a `hidden beast` number, since 5 + 3 + 1 + 6 + 9 + 8 + 6 + 529 + 7 + 92 + 0 = 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 47 ways as a sum of consecutive naturals, for example, 1100550565 + ... + 1100598875.

It is an arithmetic number, because the mean of its divisors is an integer number (337947947568).

Almost surely, 2^{53169865297920} 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 53169865297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105439759641216).

53169865297920 is an abundant number, since it is smaller than the sum of its proper divisors (157709653984512).

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

53169865297920 is a wasteful number, since it uses less digits than its factorization.

53169865297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49206 (or 49181 counting only the distinct ones).

The product of its (nonzero) digits is 440899200, while the sum is 72.

The spelling of 53169865297920 in words is "fifty-three trillion, one hundred sixty-nine billion, eight hundred sixty-five million, two hundred ninety-seven thousand, nine hundred twenty".