1300123133440 has 80 divisors (see below), whose sum is σ = 3129669219600. Its totient is φ = 517977088000.

The previous prime is 1300123133381. The next prime is 1300123133461. The reversal of 1300123133440 is 443313210031.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369115 + ... + 1654234.

It is an arithmetic number, because the mean of its divisors is an integer number (39120865245).

Almost surely, 2^{1300123133440} is an apocalyptic number.

1300123133440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300123133440 is an abundant number, since it is smaller than the sum of its proper divisors (1829546086160).

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

1300123133440 is an equidigital number, since it uses as much as digits as its factorization.

1300123133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023623 (or 2023607 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1300123133440 its reverse (443313210031), we get a palindrome (1743436343471).

The spelling of 1300123133440 in words is "one trillion, three hundred billion, one hundred twenty-three million, one hundred thirty-three thousand, four hundred forty".