1251530102513 has 4 divisors (see below), whose sum is σ = 1251536490048. Its totient is φ = 1251523714980.

The previous prime is 1251530102479. The next prime is 1251530102531. The reversal of 1251530102513 is 3152010351521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1251530102513 - 2⁸ = 1251530102257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1251530102533) 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 3 ways as a sum of consecutive naturals, for example, 2890253 + ... + 3294938.

It is an arithmetic number, because the mean of its divisors is an integer number (312884122512).

Almost surely, 2^{1251530102513} is an apocalyptic number.

It is an amenable number.

1251530102513 is a deficient number, since it is larger than the sum of its proper divisors (6387535).

1251530102513 is an equidigital number, since it uses as much as digits as its factorization.

1251530102513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387534.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 1251530102513 in words is "one trillion, two hundred fifty-one billion, five hundred thirty million, one hundred two thousand, five hundred thirteen".