53342121421520 has 80 divisors (see below), whose sum is σ = 124570490438160. Its totient is φ = 21242241073152.

The previous prime is 53342121421517. The next prime is 53342121421573. The reversal of 53342121421520 is 2512412124335.

It can be written as a sum of positive squares in 8 ways, for example, as 639980800144 + 52702140621376 = 799988^2 + 7259624^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×53342121421520² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132683852 + ... + 133085268.

It is an arithmetic number, because the mean of its divisors is an integer number (1557131130477).

Almost surely, 2^{53342121421520} is an apocalyptic number.

It is an amenable number.

53342121421520 is an abundant number, since it is smaller than the sum of its proper divisors (71228369016640).

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

53342121421520 is a wasteful number, since it uses less digits than its factorization.

53342121421520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408792 (or 408786 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 53342121421520 its reverse (2512412124335), we get a palindrome (55854533545855).

The spelling of 53342121421520 in words is "fifty-three trillion, three hundred forty-two billion, one hundred twenty-one million, four hundred twenty-one thousand, five hundred twenty".