122853503550 has 24 divisors (see below), whose sum is σ = 304676689176. Its totient is φ = 32760934240.

The previous prime is 122853503477. The next prime is 122853503573. The reversal of 122853503550 is 55305358221.

It is a junction number, because it is equal to n+sod(n) for n = 122853503499 and 122853503508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409511529 + ... + 409511828.

It is an arithmetic number, because the mean of its divisors is an integer number (12694862049).

Almost surely, 2^122853503550 is an apocalyptic number.

122853503550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122853503550 is an abundant number, since it is smaller than the sum of its proper divisors (181823185626).

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

122853503550 is a wasteful number, since it uses less digits than its factorization.

122853503550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819023372 (or 819023367 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 122853503550 in words is "one hundred twenty-two billion, eight hundred fifty-three million, five hundred three thousand, five hundred fifty".