22778132890 has 32 divisors (see below), whose sum is σ = 43446487104. Its totient is φ = 8568572160.

The previous prime is 22778132857. The next prime is 22778132899. The reversal of 22778132890 is 9823187722.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22778132899) 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, 167577 + ... + 271363.

It is an arithmetic number, because the mean of its divisors is an integer number (1357702722).

Almost surely, 2^22778132890 is an apocalyptic number.

22778132890 is a deficient number, since it is larger than the sum of its proper divisors (20668354214).

22778132890 is a wasteful number, since it uses less digits than its factorization.

22778132890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105102.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 22778132890 in words is "twenty-two billion, seven hundred seventy-eight million, one hundred thirty-two thousand, eight hundred ninety".