251243303865052 has 6 divisors (see below), whose sum is σ = 439675781763848. Its totient is φ = 125621651932524.

The previous prime is 251243303864999. The next prime is 251243303865053. The reversal of 251243303865052 is 250568303342152.

It is a junction number, because it is equal to n+sod(n) for n = 251243303864987 and 251243303865005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251243303865053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31405412983128 + ... + 31405412983135.

Almost surely, 2^{251243303865052} is an apocalyptic number.

It is an amenable number.

251243303865052 is a deficient number, since it is larger than the sum of its proper divisors (188432477898796).

251243303865052 is a wasteful number, since it uses less digits than its factorization.

251243303865052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62810825966267 (or 62810825966265 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 251243303865052 in words is "two hundred fifty-one trillion, two hundred forty-three billion, three hundred three million, eight hundred sixty-five thousand, fifty-two".