40978161127 has 4 divisors (see below), whose sum is σ = 41078352640. Its totient is φ = 40877969616.

The previous prime is 40978161109. The next prime is 40978161151. The reversal of 40978161127 is 72116187904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40978161127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40978161167) 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, 50095143 + ... + 50095960.

It is an arithmetic number, because the mean of its divisors is an integer number (10269588160).

Almost surely, 2^40978161127 is an apocalyptic number.

40978161127 is a deficient number, since it is larger than the sum of its proper divisors (100191513).

40978161127 is a wasteful number, since it uses less digits than its factorization.

40978161127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100191512.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 40978161127 in words is "forty billion, nine hundred seventy-eight million, one hundred sixty-one thousand, one hundred twenty-seven".