2381638375278 has 16 divisors (see below), whose sum is σ = 5292529722960. Its totient is φ = 793879458408.

The previous prime is 2381638375267. The next prime is 2381638375283. The reversal of 2381638375278 is 8725738361832.

2381638375278 is a `hidden beast` number, since 2 + 38 + 16 + 38 + 37 + 527 + 8 = 666.

2381638375278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 22052207125 + ... + 22052207232.

It is an arithmetic number, because the mean of its divisors is an integer number (330783107685).

Almost surely, 2^{2381638375278} is an apocalyptic number.

2381638375278 is an abundant number, since it is smaller than the sum of its proper divisors (2910891347682).

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

2381638375278 is a wasteful number, since it uses less digits than its factorization.

2381638375278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44104414368 (or 44104414362 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 2381638375278 in words is "two trillion, three hundred eighty-one billion, six hundred thirty-eight million, three hundred seventy-five thousand, two hundred seventy-eight".