1251710748287 has 16 divisors (see below), whose sum is σ = 1270376217600. Its totient is φ = 1233134165952.

The previous prime is 1251710748271. The next prime is 1251710748361. The reversal of 1251710748287 is 7828470171521.

It is not a de Polignac number, because 1251710748287 - 2⁴ = 1251710748271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251710738287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64435058 + ... + 64454480.

It is an arithmetic number, because the mean of its divisors is an integer number (79398513600).

Almost surely, 2^{1251710748287} is an apocalyptic number.

1251710748287 is a deficient number, since it is larger than the sum of its proper divisors (18665469313).

1251710748287 is a wasteful number, since it uses less digits than its factorization.

1251710748287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21662.

The product of its (nonzero) digits is 1756160, while the sum is 53.

The spelling of 1251710748287 in words is "one trillion, two hundred fifty-one billion, seven hundred ten million, seven hundred forty-eight thousand, two hundred eighty-seven".