40144120647994 has 16 divisors (see below), whose sum is σ = 65691443200896. Its totient is φ = 18247032023200.

The previous prime is 40144120647977. The next prime is 40144120647997. The reversal of 40144120647994 is 49974602144104.

It is a super-2 number, since 2×40144120647994² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40144120647997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13385107 + ... + 16107430.

It is an arithmetic number, because the mean of its divisors is an integer number (4105715200056).

Almost surely, 2^{40144120647994} is an apocalyptic number.

40144120647994 is a deficient number, since it is larger than the sum of its proper divisors (25547322552902).

40144120647994 is a wasteful number, since it uses less digits than its factorization.

40144120647994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29554421.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 40144120647994 in words is "forty trillion, one hundred forty-four billion, one hundred twenty million, six hundred forty-seven thousand, nine hundred ninety-four".