1275127765390 has 16 divisors (see below), whose sum is σ = 2299426020432. Its totient is φ = 509118652224.

The previous prime is 1275127765273. The next prime is 1275127765411. The reversal of 1275127765390 is 935677215721.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116550999 + ... + 116561938.

It is an arithmetic number, because the mean of its divisors is an integer number (143714126277).

Almost surely, 2^{1275127765390} is an apocalyptic number.

1275127765390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275127765390 is a deficient number, since it is larger than the sum of its proper divisors (1024298255042).

1275127765390 is a wasteful number, since it uses less digits than its factorization.

1275127765390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233113491.

The product of its (nonzero) digits is 5556600, while the sum is 55.

The spelling of 1275127765390 in words is "one trillion, two hundred seventy-five billion, one hundred twenty-seven million, seven hundred sixty-five thousand, three hundred ninety".