52056621121620 has 24 divisors (see below), whose sum is σ = 145758539140704. Its totient is φ = 13881765632416.

The previous prime is 52056621121601. The next prime is 52056621121621. The reversal of 52056621121620 is 2612112665025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52056621121621) 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 7 ways as a sum of consecutive naturals, for example, 433805175954 + ... + 433805176073.

It is an arithmetic number, because the mean of its divisors is an integer number (6073272464196).

Almost surely, 2^{52056621121620} is an apocalyptic number.

It is an amenable number.

52056621121620 is an abundant number, since it is smaller than the sum of its proper divisors (93701918019084).

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

52056621121620 is a wasteful number, since it uses less digits than its factorization.

52056621121620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867610352039 (or 867610352037 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 52056621121620 its reverse (2612112665025), we get a palindrome (54668733786645).

The spelling of 52056621121620 in words is "fifty-two trillion, fifty-six billion, six hundred twenty-one million, one hundred twenty-one thousand, six hundred twenty".