51055421531620 has 24 divisors (see below), whose sum is σ = 116963329327488. Its totient is φ = 18565607829600.

The previous prime is 51055421531561. The next prime is 51055421531663. The reversal of 51055421531620 is 2613512455015.

51055421531620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116035048716 + ... + 116035049155.

It is an arithmetic number, because the mean of its divisors is an integer number (4873472055312).

Almost surely, 2^{51055421531620} is an apocalyptic number.

It is an amenable number.

51055421531620 is an abundant number, since it is smaller than the sum of its proper divisors (65907907795868).

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

51055421531620 is a wasteful number, since it uses less digits than its factorization.

51055421531620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232070097891 (or 232070097889 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

Adding to 51055421531620 its reverse (2613512455015), we get a palindrome (53668933986635).

The spelling of 51055421531620 in words is "fifty-one trillion, fifty-five billion, four hundred twenty-one million, five hundred thirty-one thousand, six hundred twenty".