122783888890 has 32 divisors (see below), whose sum is σ = 238467067776. Its totient is φ = 45248880960.

The previous prime is 122783888867. The next prime is 122783888891. The reversal of 122783888890 is 98888387221.

It is not an unprimeable number, because it can be changed into a prime (122783888891) 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, 834966 + ... + 970945.

It is an arithmetic number, because the mean of its divisors is an integer number (7452095868).

Almost surely, 2^122783888890 is an apocalyptic number.

122783888890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122783888890 is a deficient number, since it is larger than the sum of its proper divisors (115683178886).

122783888890 is a wasteful number, since it uses less digits than its factorization.

122783888890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806454.

The product of its (nonzero) digits is 24772608, while the sum is 64.

The spelling of 122783888890 in words is "one hundred twenty-two billion, seven hundred eighty-three million, eight hundred eighty-eight thousand, eight hundred ninety".