51418578178652 has 48 divisors (see below), whose sum is σ = 91899667994400. Its totient is φ = 25167311769600.

The previous prime is 51418578178559. The next prime is 51418578178663. The reversal of 51418578178652 is 25687187581415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942343523 + ... + 942398085.

It is an arithmetic number, because the mean of its divisors is an integer number (1914576416550).

Almost surely, 2^{51418578178652} is an apocalyptic number.

It is an amenable number.

51418578178652 is a deficient number, since it is larger than the sum of its proper divisors (40481089815748).

51418578178652 is a wasteful number, since it uses less digits than its factorization.

51418578178652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80966 (or 80964 counting only the distinct ones).

The product of its digits is 150528000, while the sum is 68.

The spelling of 51418578178652 in words is "fifty-one trillion, four hundred eighteen billion, five hundred seventy-eight million, one hundred seventy-eight thousand, six hundred fifty-two".