121583613460 has 48 divisors (see below), whose sum is σ = 258995947392. Its totient is φ = 47934723200.

The previous prime is 121583613439. The next prime is 121583613493. The reversal of 121583613460 is 64316385121.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5969454 + ... + 5989786.

It is an arithmetic number, because the mean of its divisors is an integer number (5395748904).

Almost surely, 2^121583613460 is an apocalyptic number.

121583613460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121583613460 is an abundant number, since it is smaller than the sum of its proper divisors (137412333932).

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

121583613460 is a wasteful number, since it uses less digits than its factorization.

121583613460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24624 (or 24622 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 121583613460 its reverse (64316385121), we get a palindrome (185899998581).

The spelling of 121583613460 in words is "one hundred twenty-one billion, five hundred eighty-three million, six hundred thirteen thousand, four hundred sixty".