251055678377 has 12 divisors (see below), whose sum is σ = 309223441620. Its totient is φ = 202532311296.

The previous prime is 251055678373. The next prime is 251055678431. The reversal of 251055678377 is 773876550152.

251055678377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187791355801 + 63264322576 = 433349^2 + 251524^2 .

It is not a de Polignac number, because 251055678377 - 2² = 251055678373 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 150692852 + ... + 150694517.

It is an arithmetic number, because the mean of its divisors is an integer number (25768620135).

Almost surely, 2^251055678377 is an apocalyptic number.

It is an amenable number.

251055678377 is a deficient number, since it is larger than the sum of its proper divisors (58167763243).

251055678377 is a wasteful number, since it uses less digits than its factorization.

251055678377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301387400 (or 301387393 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 56.

The spelling of 251055678377 in words is "two hundred fifty-one billion, fifty-five million, six hundred seventy-eight thousand, three hundred seventy-seven".