127640322642154 has 8 divisors (see below), whose sum is σ = 218811981672288. Its totient is φ = 54702995418060.

The previous prime is 127640322642127. The next prime is 127640322642167. The reversal of 127640322642154 is 451246223046721.

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

It is a junction number, because it is equal to n+sod(n) for n = 127640322642098 and 127640322642107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4558582951492 + ... + 4558582951519.

It is an arithmetic number, because the mean of its divisors is an integer number (27351497709036).

Almost surely, 2^{127640322642154} is an apocalyptic number.

127640322642154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

127640322642154 is a deficient number, since it is larger than the sum of its proper divisors (91171659030134).

127640322642154 is an equidigital number, since it uses as much as digits as its factorization.

127640322642154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117165903020.

The product of its (nonzero) digits is 3870720, while the sum is 49.

Adding to 127640322642154 its reverse (451246223046721), we get a palindrome (578886545688875).

The spelling of 127640322642154 in words is "one hundred twenty-seven trillion, six hundred forty billion, three hundred twenty-two million, six hundred forty-two thousand, one hundred fifty-four".