1275377754138 has 8 divisors (see below), whose sum is σ = 2550755508288. Its totient is φ = 425125918044.

The previous prime is 1275377754137. The next prime is 1275377754139. The reversal of 1275377754138 is 8314577735721.

It is an interprime number because it is at equal distance from previous prime (1275377754137) and next prime (1275377754139).

It is a sphenic number, since it is the product of 3 distinct primes.

1275377754138 is an admirable number.

It is a super-2 number, since 2×1275377754138² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1275377754137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106281479506 + ... + 106281479517.

It is an arithmetic number, because the mean of its divisors is an integer number (318844438536).

Almost surely, 2^{1275377754138} is an apocalyptic number.

1275377754138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1275377754138 is a wasteful number, since it uses less digits than its factorization.

1275377754138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212562959028.

The product of its digits is 34574400, while the sum is 60.

The spelling of 1275377754138 in words is "one trillion, two hundred seventy-five billion, three hundred seventy-seven million, seven hundred fifty-four thousand, one hundred thirty-eight".