121577527716 has 48 divisors (see below), whose sum is σ = 286062658560. Its totient is φ = 40186754080.

The previous prime is 121577527711. The next prime is 121577527751. The reversal of 121577527716 is 617725775121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121577527711) by changing a digit.

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, 767281 + ... + 912071.

It is an arithmetic number, because the mean of its divisors is an integer number (5959638720).

Almost surely, 2^121577527716 is an apocalyptic number.

It is an amenable number.

121577527716 is an abundant number, since it is smaller than the sum of its proper divisors (164485130844).

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

121577527716 is a wasteful number, since it uses less digits than its factorization.

121577527716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145384 (or 145382 counting only the distinct ones).

The product of its digits is 1440600, while the sum is 51.

The spelling of 121577527716 in words is "one hundred twenty-one billion, five hundred seventy-seven million, five hundred twenty-seven thousand, seven hundred sixteen".