121505552664 has 16 divisors (see below), whose sum is σ = 303763881720. Its totient is φ = 40501850880.

The previous prime is 121505552659. The next prime is 121505552671. The reversal of 121505552664 is 466255505121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531365657 + ... + 2531365704.

Almost surely, 2^121505552664 is an apocalyptic number.

It is an amenable number.

121505552664 is an abundant number, since it is smaller than the sum of its proper divisors (182258329056).

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

121505552664 is a wasteful number, since it uses less digits than its factorization.

121505552664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062731370 (or 5062731366 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

It can be divided in two parts, 12150 and 5552664, that multiplied together give a square (67464867600 = 259740²).

The spelling of 121505552664 in words is "one hundred twenty-one billion, five hundred five million, five hundred fifty-two thousand, six hundred sixty-four".