51211322375 has 64 divisors (see below), whose sum is σ = 66061771776. Its totient is φ = 39620880000.

The previous prime is 51211322333. The next prime is 51211322399. The reversal of 51211322375 is 57322311215.

It is not a de Polignac number, because 51211322375 - 2¹⁴ = 51211305991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 166811972 + ... + 166812278.

It is an arithmetic number, because the mean of its divisors is an integer number (1032215184).

Almost surely, 2^51211322375 is an apocalyptic number.

51211322375 is a deficient number, since it is larger than the sum of its proper divisors (14850449401).

51211322375 is a wasteful number, since it uses less digits than its factorization.

51211322375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 671 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The spelling of 51211322375 in words is "fifty-one billion, two hundred eleven million, three hundred twenty-two thousand, three hundred seventy-five".