20064061578 has 32 divisors (see below), whose sum is σ = 43792166592. Its totient is φ = 6077792000.

The previous prime is 20064061573. The next prime is 20064061621. The reversal of 20064061578 is 87516046002.

It is not an unprimeable number, because it can be changed into a prime (20064061573) 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, 130600 + ... + 239132.

It is an arithmetic number, because the mean of its divisors is an integer number (1368505206).

Almost surely, 2^20064061578 is an apocalyptic number.

20064061578 is an abundant number, since it is smaller than the sum of its proper divisors (23728105014).

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

20064061578 is a wasteful number, since it uses less digits than its factorization.

20064061578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111350.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 20064061578 in words is "twenty billion, sixty-four million, sixty-one thousand, five hundred seventy-eight".