1275964399137 has 16 divisors (see below), whose sum is σ = 1850046953472. Its totient is φ = 778967136000.

The previous prime is 1275964399097. The next prime is 1275964399153. The reversal of 1275964399137 is 7319934695721.

It is not a de Polignac number, because 1275964399137 - 2⁷ = 1275964399009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275964399637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338091489 + ... + 338095262.

It is an arithmetic number, because the mean of its divisors is an integer number (115627934592).

Almost surely, 2^{1275964399137} is an apocalyptic number.

1275964399137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1275964399137 is a deficient number, since it is larger than the sum of its proper divisors (574082554335).

1275964399137 is a wasteful number, since it uses less digits than its factorization.

1275964399137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676186808.

The product of its digits is 77157360, while the sum is 66.

The spelling of 1275964399137 in words is "one trillion, two hundred seventy-five billion, nine hundred sixty-four million, three hundred ninety-nine thousand, one hundred thirty-seven".