51272894780 has 12 divisors (see below), whose sum is σ = 107673079080. Its totient is φ = 20509157904.

The previous prime is 51272894689. The next prime is 51272894801. The reversal of 51272894780 is 8749827215.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1281822350 + ... + 1281822389.

It is an arithmetic number, because the mean of its divisors is an integer number (8972756590).

Almost surely, 2^51272894780 is an apocalyptic number.

It is an amenable number.

51272894780 is an abundant number, since it is smaller than the sum of its proper divisors (56400184300).

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

51272894780 is a wasteful number, since it uses less digits than its factorization.

51272894780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563644748 (or 2563644746 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 51272894780 in words is "fifty-one billion, two hundred seventy-two million, eight hundred ninety-four thousand, seven hundred eighty".