2154666054132 has 36 divisors (see below), whose sum is σ = 5446909145860. Its totient is φ = 718170302592.

The previous prime is 2154666054103. The next prime is 2154666054133. The reversal of 2154666054132 is 2314506664512.

It can be written as a sum of positive squares in 2 ways, for example, as 1704685364496 + 449980689636 = 1305636^2 + 670806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154666054133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1646257 + ... + 2649432.

Almost surely, 2^{2154666054132} is an apocalyptic number.

It is an amenable number.

2154666054132 is an abundant number, since it is smaller than the sum of its proper divisors (3292243091728).

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

2154666054132 is a wasteful number, since it uses less digits than its factorization.

2154666054132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309632 (or 4309627 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 2154666054132 in words is "two trillion, one hundred fifty-four billion, six hundred sixty-six million, fifty-four thousand, one hundred thirty-two".