51378252424446 has 16 divisors (see below), whose sum is σ = 102757197698064. Its totient is φ = 17125968666624.

The previous prime is 51378252424439. The next prime is 51378252424463. The reversal of 51378252424446 is 64442425287315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27902211 + ... + 29686526.

It is an arithmetic number, because the mean of its divisors is an integer number (6422324856129).

Almost surely, 2^{51378252424446} is an apocalyptic number.

51378252424446 is an abundant number, since it is smaller than the sum of its proper divisors (51378945273618).

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

51378252424446 is a wasteful number, since it uses less digits than its factorization.

51378252424446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57737435.

The product of its digits is 51609600, while the sum is 57.

The spelling of 51378252424446 in words is "fifty-one trillion, three hundred seventy-eight billion, two hundred fifty-two million, four hundred twenty-four thousand, four hundred forty-six".