40120060666464 has 120 divisors (see below), whose sum is σ = 117994727865168. Its totient is φ = 13373042561280.

The previous prime is 40120060666463. The next prime is 40120060666487. The reversal of 40120060666464 is 46466606002104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120060666463) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129255774 + ... + 129565794.

Almost surely, 2^{40120060666464} is an apocalyptic number.

It is an amenable number.

40120060666464 is an abundant number, since it is smaller than the sum of its proper divisors (77874667198704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40120060666464 is a wasteful number, since it uses less digits than its factorization.

40120060666464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359970 (or 359953 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

Adding to 40120060666464 its reverse (46466606002104), we get a palindrome (86586666668568).

The spelling of 40120060666464 in words is "forty trillion, one hundred twenty billion, sixty million, six hundred sixty-six thousand, four hundred sixty-four".