53312147540 has 12 divisors (see below), whose sum is σ = 111955509876. Its totient is φ = 21324859008.

The previous prime is 53312147527. The next prime is 53312147549. The reversal of 53312147540 is 4574121335.

It can be written as a sum of positive squares in 2 ways, for example, as 17296458256 + 36015689284 = 131516^2 + 189778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53312147540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53312147549) 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, 1332803669 + ... + 1332803708.

It is an arithmetic number, because the mean of its divisors is an integer number (9329625823).

Almost surely, 2^53312147540 is an apocalyptic number.

It is an amenable number.

53312147540 is an abundant number, since it is smaller than the sum of its proper divisors (58643362336).

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

53312147540 is a wasteful number, since it uses less digits than its factorization.

53312147540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665607386 (or 2665607384 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 53312147540 its reverse (4574121335), we get a palindrome (57886268875).

The spelling of 53312147540 in words is "fifty-three billion, three hundred twelve million, one hundred forty-seven thousand, five hundred forty".