53700020220 has 288 divisors, whose sum is σ = 192400379136. Its totient is φ = 11157632640.

The previous prime is 53700020177. The next prime is 53700020221. The reversal of 53700020220 is 2202000735.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53700020221) 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 95 ways as a sum of consecutive naturals, for example, 3906279 + ... + 3920001.

It is an arithmetic number, because the mean of its divisors is an integer number (668056872).

Almost surely, 2^53700020220 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 53700020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96200189568).

53700020220 is an abundant number, since it is smaller than the sum of its proper divisors (138700358916).

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

53700020220 is a wasteful number, since it uses less digits than its factorization.

53700020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782 (or 13751 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

Adding to 53700020220 its reverse (2202000735), we get a palindrome (55902020955).

The spelling of 53700020220 in words is "fifty-three billion, seven hundred million, twenty thousand, two hundred twenty".