121617523400 has 48 divisors (see below), whose sum is σ = 282912100800. Its totient is φ = 48620969280.

The previous prime is 121617523343. The next prime is 121617523411. The reversal of 121617523400 is 4325716121.

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, 213989 + ... + 537611.

It is an arithmetic number, because the mean of its divisors is an integer number (5894002100).

Almost surely, 2^121617523400 is an apocalyptic number.

121617523400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121617523400 is an abundant number, since it is smaller than the sum of its proper divisors (161294577400).

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

121617523400 is a wasteful number, since it uses less digits than its factorization.

121617523400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325518 (or 325509 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 121617523400 in words is "one hundred twenty-one billion, six hundred seventeen million, five hundred twenty-three thousand, four hundred".