1279740140750 has 64 divisors (see below), whose sum is σ = 2522724609600. Its totient is φ = 484768972800.

The previous prime is 1279740140741. The next prime is 1279740140813. The reversal of 1279740140750 is 570410479721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1279740140695 and 1279740140704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12722654 + ... + 12822846.

It is an arithmetic number, because the mean of its divisors is an integer number (39417572025).

Almost surely, 2^{1279740140750} is an apocalyptic number.

1279740140750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1279740140750 is a deficient number, since it is larger than the sum of its proper divisors (1242984468850).

1279740140750 is a wasteful number, since it uses less digits than its factorization.

1279740140750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102918 (or 102908 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 1279740140750 in words is "one trillion, two hundred seventy-nine billion, seven hundred forty million, one hundred forty thousand, seven hundred fifty".