127136531378 has 8 divisors (see below), whose sum is σ = 193118782080. Its totient is φ = 62763604020.

The previous prime is 127136531377. The next prime is 127136531443. The reversal of 127136531378 is 873135631721.

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

It is a super-2 number, since 2×127136531378² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127136531377) 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, 402330638 + ... + 402330953.

It is an arithmetic number, because the mean of its divisors is an integer number (24139847760).

Almost surely, 2^127136531378 is an apocalyptic number.

127136531378 is a deficient number, since it is larger than the sum of its proper divisors (65982250702).

127136531378 is an equidigital number, since it uses as much as digits as its factorization.

127136531378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804661672.

The product of its digits is 635040, while the sum is 47.

The spelling of 127136531378 in words is "one hundred twenty-seven billion, one hundred thirty-six million, five hundred thirty-one thousand, three hundred seventy-eight".