1251132311104 has 28 divisors (see below), whose sum is σ = 2673693810844. Its totient is φ = 577445681664.

The previous prime is 1251132311081. The next prime is 1251132311197. The reversal of 1251132311104 is 4011132311521.

It can be written as a sum of positive squares in 2 ways, for example, as 387570992704 + 863561318400 = 622552^2 + 929280^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751881567 + ... + 751883230.

It is an arithmetic number, because the mean of its divisors is an integer number (95489064673).

Almost surely, 2^{1251132311104} is an apocalyptic number.

It is an amenable number.

1251132311104 is an abundant number, since it is smaller than the sum of its proper divisors (1422561499740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251132311104 is a wasteful number, since it uses less digits than its factorization.

1251132311104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503764822 (or 1503764812 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1251132311104 its reverse (4011132311521), we get a palindrome (5262264622625).

The spelling of 1251132311104 in words is "one trillion, two hundred fifty-one billion, one hundred thirty-two million, three hundred eleven thousand, one hundred four".