121650042480 has 160 divisors (see below), whose sum is σ = 382763501568. Its totient is φ = 31954944000.

The previous prime is 121650042457. The next prime is 121650042499. The reversal of 121650042480 is 84240056121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25336080 + ... + 25340880.

Almost surely, 2^121650042480 is an apocalyptic number.

121650042480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121650042480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191381750784).

121650042480 is an abundant number, since it is smaller than the sum of its proper divisors (261113459088).

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

121650042480 is a wasteful number, since it uses less digits than its factorization.

121650042480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375 (or 6369 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 121650042480 in words is "one hundred twenty-one billion, six hundred fifty million, forty-two thousand, four hundred eighty".