122265553840 has 20 divisors (see below), whose sum is σ = 284267412864. Its totient is φ = 48906221504.

The previous prime is 122265553777. The next prime is 122265553877. The reversal of 122265553840 is 48355562221.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764159632 + ... + 764159791.

Almost surely, 2^122265553840 is an apocalyptic number.

122265553840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122265553840 is an abundant number, since it is smaller than the sum of its proper divisors (162001859024).

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

122265553840 is a wasteful number, since it uses less digits than its factorization.

122265553840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528319436 (or 1528319430 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 122265553840 in words is "one hundred twenty-two billion, two hundred sixty-five million, five hundred fifty-three thousand, eight hundred forty".