20022200978 has 48 divisors (see below), whose sum is σ = 33064030080. Its totient is φ = 9087743808.

The previous prime is 20022200977. The next prime is 20022201013. The reversal of 20022200978 is 87900222002.

It is not an unprimeable number, because it can be changed into a prime (20022200977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7395101 + ... + 7397807.

It is an arithmetic number, because the mean of its divisors is an integer number (688833960).

Almost surely, 2^20022200978 is an apocalyptic number.

20022200978 is a deficient number, since it is larger than the sum of its proper divisors (13041829102).

20022200978 is a wasteful number, since it uses less digits than its factorization.

20022200978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 20022200978 in words is "twenty billion, twenty-two million, two hundred thousand, nine hundred seventy-eight".