2163978360037 has 16 divisors (see below), whose sum is σ = 2342721270960. Its totient is φ = 1986992013312.

The previous prime is 2163978359953. The next prime is 2163978360059. The reversal of 2163978360037 is 7300638793612.

It can be written as a sum of positive squares in 8 ways, for example, as 710895177316 + 1453083182721 = 843146^2 + 1205439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163978360037 - 2³¹ = 2161830876389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2163978360037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163978330037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34334289 + ... + 34397257.

It is an arithmetic number, because the mean of its divisors is an integer number (146420079435).

Almost surely, 2^{2163978360037} is an apocalyptic number.

It is an amenable number.

2163978360037 is a deficient number, since it is larger than the sum of its proper divisors (178742910923).

2163978360037 is a wasteful number, since it uses less digits than its factorization.

2163978360037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76872.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 2163978360037 in words is "two trillion, one hundred sixty-three billion, nine hundred seventy-eight million, three hundred sixty thousand, thirty-seven".