1251351350530 has 16 divisors (see below), whose sum is σ = 2330102515320. Its totient is φ = 483280521472.

The previous prime is 1251351350521. The next prime is 1251351350533. The reversal of 1251351350530 is 350531531521.

It can be written as a sum of positive squares in 4 ways, for example, as 1126610293561 + 124741056969 = 1061419^2 + 353187^2 .

It is not an unprimeable number, because it can be changed into a prime (1251351350533) 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 7 ways as a sum of consecutive naturals, for example, 2157502039 + ... + 2157502618.

Almost surely, 2^{1251351350530} is an apocalyptic number.

1251351350530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251351350530 is a deficient number, since it is larger than the sum of its proper divisors (1078751164790).

1251351350530 is a wasteful number, since it uses less digits than its factorization.

1251351350530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315004693.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 1251351350530 in words is "one trillion, two hundred fifty-one billion, three hundred fifty-one million, three hundred fifty thousand, five hundred thirty".