64204790878706 has 32 divisors (see below), whose sum is σ = 99628882329600. Its totient is φ = 31015324959696.

The previous prime is 64204790878703. The next prime is 64204790878763. The reversal of 64204790878706 is 60787809740246.

It is a happy number.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (64204790878703) 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, 11137370 + ... + 15888693.

It is an arithmetic number, because the mean of its divisors is an integer number (3113402572800).

Almost surely, 2^{64204790878706} is an apocalyptic number.

64204790878706 is a deficient number, since it is larger than the sum of its proper divisors (35424091450894).

64204790878706 is a wasteful number, since it uses less digits than its factorization.

64204790878706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27026438.

The product of its (nonzero) digits is 227598336, while the sum is 68.

The spelling of 64204790878706 in words is "sixty-four trillion, two hundred four billion, seven hundred ninety million, eight hundred seventy-eight thousand, seven hundred six".