51780628068378 has 32 divisors (see below), whose sum is σ = 113724100680192. Its totient is φ = 15587184846000.

The previous prime is 51780628068233. The next prime is 51780628068383. The reversal of 51780628068378 is 87386082608715.

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, 2597854176 + ... + 2597874107.

It is an arithmetic number, because the mean of its divisors is an integer number (3553878146256).

Almost surely, 2^{51780628068378} is an apocalyptic number.

51780628068378 is an abundant number, since it is smaller than the sum of its proper divisors (61943472611814).

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

51780628068378 is a wasteful number, since it uses less digits than its factorization.

51780628068378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195728450.

The product of its (nonzero) digits is 216760320, while the sum is 69.

The spelling of 51780628068378 in words is "fifty-one trillion, seven hundred eighty billion, six hundred twenty-eight million, sixty-eight thousand, three hundred seventy-eight".