1038723715865 has 16 divisors (see below), whose sum is σ = 1360564934976. Its totient is φ = 755001451200.

The previous prime is 1038723715837. The next prime is 1038723715877. The reversal of 1038723715865 is 5685173278301.

It is not a de Polignac number, because 1038723715865 - 2¹⁰ = 1038723714841 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 1038723715865.

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, 5328107 + ... + 5519616.

It is an arithmetic number, because the mean of its divisors is an integer number (85035308436).

Almost surely, 2^{1038723715865} is an apocalyptic number.

It is an amenable number.

1038723715865 is a deficient number, since it is larger than the sum of its proper divisors (321841219111).

1038723715865 is a wasteful number, since it uses less digits than its factorization.

1038723715865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10849480.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 1038723715865 in words is "one trillion, thirty-eight billion, seven hundred twenty-three million, seven hundred fifteen thousand, eight hundred sixty-five".