251055678378 has 32 divisors (see below), whose sum is σ = 505784240640. Its totient is φ = 83074080960.

The previous prime is 251055678373. The next prime is 251055678431. The reversal of 251055678378 is 873876550152.

251055678378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (251055678373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882343 + ... + 1131653.

It is an arithmetic number, because the mean of its divisors is an integer number (15805757520).

Almost surely, 2^251055678378 is an apocalyptic number.

251055678378 is an abundant number, since it is smaller than the sum of its proper divisors (254728562262).

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

251055678378 is a wasteful number, since it uses less digits than its factorization.

251055678378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250542.

The product of its (nonzero) digits is 14112000, while the sum is 57.

The spelling of 251055678378 in words is "two hundred fifty-one billion, fifty-five million, six hundred seventy-eight thousand, three hundred seventy-eight".