127440754756406 has 32 divisors (see below), whose sum is σ = 247658146901760. Its totient is φ = 47762642614176.

The previous prime is 127440754756333. The next prime is 127440754756409. The reversal of 127440754756406 is 604657457044721.

It is a happy number.

It is a super-2 number, since 2×127440754756406² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127440754756409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18426941996 + ... + 18426948911.

It is an arithmetic number, because the mean of its divisors is an integer number (7739317090680).

Almost surely, 2^{127440754756406} is an apocalyptic number.

127440754756406 is a deficient number, since it is larger than the sum of its proper divisors (120217392145354).

127440754756406 is a wasteful number, since it uses less digits than its factorization.

127440754756406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36853890948.

The product of its (nonzero) digits is 158054400, while the sum is 62.

The spelling of 127440754756406 in words is "one hundred twenty-seven trillion, four hundred forty billion, seven hundred fifty-four million, seven hundred fifty-six thousand, four hundred six".