53517772720540 has 12 divisors (see below), whose sum is σ = 112387322713176. Its totient is φ = 21407109088208.

The previous prime is 53517772720507. The next prime is 53517772720547. The reversal of 53517772720540 is 4502727771535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53517772720547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337944317994 + ... + 1337944318033.

It is an arithmetic number, because the mean of its divisors is an integer number (9365610226098).

Almost surely, 2^{53517772720540} is an apocalyptic number.

It is an amenable number.

53517772720540 is an abundant number, since it is smaller than the sum of its proper divisors (58869549992636).

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

53517772720540 is a wasteful number, since it uses less digits than its factorization.

53517772720540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675888636036 (or 2675888636034 counting only the distinct ones).

The product of its (nonzero) digits is 14406000, while the sum is 55.

The spelling of 53517772720540 in words is "fifty-three trillion, five hundred seventeen billion, seven hundred seventy-two million, seven hundred twenty thousand, five hundred forty".