121655825311488 has 72 divisors (see below), whose sum is σ = 348688210877328. Its totient is φ = 37432561631232.

The previous prime is 121655825311487. The next prime is 121655825311511. The reversal of 121655825311488 is 884113528556121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121655825311481) 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, 6092529345 + ... + 6092549312.

Almost surely, 2^{121655825311488} is an apocalyptic number.

It is an amenable number.

121655825311488 is an abundant number, since it is smaller than the sum of its proper divisors (227032385565840).

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

121655825311488 is a wasteful number, since it uses less digits than its factorization.

121655825311488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12185078689 (or 12185078675 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 60.

The spelling of 121655825311488 in words is "one hundred twenty-one trillion, six hundred fifty-five billion, eight hundred twenty-five million, three hundred eleven thousand, four hundred eighty-eight".