251316151401 has 12 divisors (see below), whose sum is σ = 389796479952. Its totient is φ = 143609229288.

The previous prime is 251316151363. The next prime is 251316151477. The reversal of 251316151401 is 104151613152.

It is not a de Polignac number, because 251316151401 - 2⁹ = 251316150889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251316151001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854816695 + ... + 854816988.

It is an arithmetic number, because the mean of its divisors is an integer number (32483039996).

Almost surely, 2^251316151401 is an apocalyptic number.

251316151401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

251316151401 is a deficient number, since it is larger than the sum of its proper divisors (138480328551).

251316151401 is a wasteful number, since it uses less digits than its factorization.

251316151401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709633700 (or 1709633693 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 251316151401 its reverse (104151613152), we get a palindrome (355467764553).

The spelling of 251316151401 in words is "two hundred fifty-one billion, three hundred sixteen million, one hundred fifty-one thousand, four hundred one".