2127800378516 has 12 divisors (see below), whose sum is σ = 3942688936788. Its totient is φ = 1001317825152.

The previous prime is 2127800378507. The next prime is 2127800378591. The reversal of 2127800378516 is 6158730087212.

It can be written as a sum of positive squares in 2 ways, for example, as 773942467600 + 1353857910916 = 879740^2 + 1163554^2 .

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, 15645590951 + ... + 15645591086.

It is an arithmetic number, because the mean of its divisors is an integer number (328557411399).

Almost surely, 2^{2127800378516} is an apocalyptic number.

It is an amenable number.

2127800378516 is a deficient number, since it is larger than the sum of its proper divisors (1814888558272).

2127800378516 is a wasteful number, since it uses less digits than its factorization.

2127800378516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31291182058 (or 31291182056 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 2127800378516 in words is "two trillion, one hundred twenty-seven billion, eight hundred million, three hundred seventy-eight thousand, five hundred sixteen".