20220009978 has 32 divisors (see below), whose sum is σ = 46237403520. Its totient is φ = 5774616000.

The previous prime is 20220009977. The next prime is 20220010003. The reversal of 20220009978 is 87990002202.

It is not an unprimeable number, because it can be changed into a prime (20220009977) 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, 7273 + ... + 201228.

It is an arithmetic number, because the mean of its divisors is an integer number (1444918860).

Almost surely, 2^20220009978 is an apocalyptic number.

20220009978 is an abundant number, since it is smaller than the sum of its proper divisors (26017393542).

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

20220009978 is a wasteful number, since it uses less digits than its factorization.

20220009978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210822.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 20220009978 in words is "twenty billion, two hundred twenty million, nine thousand, nine hundred seventy-eight".