121173760557552 has 40 divisors (see below), whose sum is σ = 313089789885136. Its totient is φ = 40383824472576.

The previous prime is 121173760557497. The next prime is 121173760557559. The reversal of 121173760557552 is 255755067371121.

It is a junction number, because it is equal to n+sod(n) for n = 121173760557492 and 121173760557501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121173760557559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231894013 + ... + 232415964.

Almost surely, 2^{121173760557552} is an apocalyptic number.

121173760557552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121173760557552 is an abundant number, since it is smaller than the sum of its proper divisors (191916029327584).

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

121173760557552 is a wasteful number, since it uses less digits than its factorization.

121173760557552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464315425 (or 464315419 counting only the distinct ones).

The product of its (nonzero) digits is 15435000, while the sum is 57.

The spelling of 121173760557552 in words is "one hundred twenty-one trillion, one hundred seventy-three billion, seven hundred sixty million, five hundred fifty-seven thousand, five hundred fifty-two".