2145002378652 has 54 divisors (see below), whose sum is σ = 6307328428128. Its totient is φ = 612857821968.

The previous prime is 2145002378647. The next prime is 2145002378713. The reversal of 2145002378652 is 2568732005412.

2145002378652 is a `hidden beast` number, since 2 + 1 + 4 + 500 + 23 + 78 + 6 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2145002378598 and 2145002378607.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 607992108 + ... + 607995635.

Almost surely, 2^{2145002378652} is an apocalyptic number.

It is an amenable number.

2145002378652 is an abundant number, since it is smaller than the sum of its proper divisors (4162326049476).

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

2145002378652 is a wasteful number, since it uses less digits than its factorization.

2145002378652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215987767 (or 1215987755 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 2145002378652 in words is "two trillion, one hundred forty-five billion, two million, three hundred seventy-eight thousand, six hundred fifty-two".