1251500130043 has 24 divisors (see below), whose sum is σ = 1357861737408. Its totient is φ = 1152458160768.

The previous prime is 1251500130037. The next prime is 1251500130079. The reversal of 1251500130043 is 3400310051521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1251500130043 is a prime.

It is a super-2 number, since 2×1251500130043² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1251500130443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13752430 + ... + 13843132.

It is an arithmetic number, because the mean of its divisors is an integer number (56577572392).

Almost surely, 2^{1251500130043} is an apocalyptic number.

1251500130043 is a deficient number, since it is larger than the sum of its proper divisors (106361607365).

1251500130043 is a wasteful number, since it uses less digits than its factorization.

1251500130043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91811 (or 91792 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1251500130043 its reverse (3400310051521), we get a palindrome (4651810181564).

The spelling of 1251500130043 in words is "one trillion, two hundred fifty-one billion, five hundred million, one hundred thirty thousand, forty-three".