64200040012 has 12 divisors (see below), whose sum is σ = 112365237096. Its totient is φ = 32095686560.

The previous prime is 64200039983. The next prime is 64200040013. The reversal of 64200040012 is 21004000246.

It is not an unprimeable number, because it can be changed into a prime (64200040013) 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, 1049914 + ... + 1109377.

It is an arithmetic number, because the mean of its divisors is an integer number (9363769758).

Almost surely, 2^64200040012 is an apocalyptic number.

It is an amenable number.

64200040012 is a deficient number, since it is larger than the sum of its proper divisors (48165197084).

64200040012 is a wasteful number, since it uses less digits than its factorization.

64200040012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166728 (or 2166726 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 64200040012 its reverse (21004000246), we get a palindrome (85204040258).

The spelling of 64200040012 in words is "sixty-four billion, two hundred million, forty thousand, twelve".