251453132540004 has 96 divisors (see below), whose sum is σ = 591897766876416. Its totient is φ = 83081291604480.

The previous prime is 251453132539991. The next prime is 251453132540009. The reversal of 251453132540004 is 400045231354152.

It is not an unprimeable number, because it can be changed into a prime (251453132540009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3480139542 + ... + 3480211794.

It is an arithmetic number, because the mean of its divisors is an integer number (6165601738296).

Almost surely, 2^{251453132540004} is an apocalyptic number.

It is an amenable number.

251453132540004 is an abundant number, since it is smaller than the sum of its proper divisors (340444634336412).

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

251453132540004 is a wasteful number, since it uses less digits than its factorization.

251453132540004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76885 (or 76883 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 251453132540004 its reverse (400045231354152), we get a palindrome (651498363894156).

The spelling of 251453132540004 in words is "two hundred fifty-one trillion, four hundred fifty-three billion, one hundred thirty-two million, five hundred forty thousand, four".