251128428801 has 8 divisors (see below), whose sum is σ = 334994599584. Its totient is φ = 167340605280.

The previous prime is 251128428779. The next prime is 251128428839. The reversal of 251128428801 is 108824821152.

251128428801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 251128428801 - 2⁹ = 251128428289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251128420801) 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 7 ways as a sum of consecutive naturals, for example, 19579335 + ... + 19592156.

It is an arithmetic number, because the mean of its divisors is an integer number (41874324948).

Almost surely, 2^251128428801 is an apocalyptic number.

It is an amenable number.

251128428801 is a deficient number, since it is larger than the sum of its proper divisors (83866170783).

251128428801 is a wasteful number, since it uses less digits than its factorization.

251128428801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39173631.

The product of its (nonzero) digits is 81920, while the sum is 42.

The spelling of 251128428801 in words is "two hundred fifty-one billion, one hundred twenty-eight million, four hundred twenty-eight thousand, eight hundred one".