2125154215668 has 48 divisors (see below), whose sum is σ = 5416764304896. Its totient is φ = 643119358560.

The previous prime is 2125154215649. The next prime is 2125154215673. The reversal of 2125154215668 is 8665124515212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10736146 + ... + 10932297.

It is an arithmetic number, because the mean of its divisors is an integer number (112849256352).

Almost surely, 2^{2125154215668} is an apocalyptic number.

It is an amenable number.

2125154215668 is an abundant number, since it is smaller than the sum of its proper divisors (3291610089228).

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

2125154215668 is a wasteful number, since it uses less digits than its factorization.

2125154215668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21669204 (or 21669202 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 48.

The spelling of 2125154215668 in words is "two trillion, one hundred twenty-five billion, one hundred fifty-four million, two hundred fifteen thousand, six hundred sixty-eight".