251300004432642 has 24 divisors (see below), whose sum is σ = 593981828659440. Its totient is φ = 76151516494680.

The previous prime is 251300004432637. The next prime is 251300004432661. The reversal of 251300004432642 is 246234400003152.

251300004432642 is a `hidden beast` number, since 2 + 5 + 1 + 3 + 0 + 0 + 0 + 0 + 4 + 4 + 3 + 2 + 642 = 666.

251300004432642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251300004432597 and 251300004432606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 634595970592 + ... + 634595970987.

It is an arithmetic number, because the mean of its divisors is an integer number (24749242860810).

Almost surely, 2^{251300004432642} is an apocalyptic number.

251300004432642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

251300004432642 is an abundant number, since it is smaller than the sum of its proper divisors (342681824226798).

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

251300004432642 is a wasteful number, since it uses less digits than its factorization.

251300004432642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269191941598 (or 1269191941595 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 251300004432642 its reverse (246234400003152), we get a palindrome (497534404435794).

The spelling of 251300004432642 in words is "two hundred fifty-one trillion, three hundred billion, four million, four hundred thirty-two thousand, six hundred forty-two".