799775172903 has 32 divisors (see below), whose sum is σ = 1221139389952. Its totient is φ = 456102057600.

The previous prime is 799775172887. The next prime is 799775172947. The reversal of 799775172903 is 309271577997.

It is a happy number.

It is not a de Polignac number, because 799775172903 - 2⁴ = 799775172887 is a prime.

It is the 894302-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799775172403) by changing a digit.

It is a nontrivial repunit in base 894301.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40939248 + ... + 40958778.

It is an arithmetic number, because the mean of its divisors is an integer number (38160605936).

Almost surely, 2^799775172903 is an apocalyptic number.

799775172903 is a deficient number, since it is larger than the sum of its proper divisors (421364217049).

799775172903 is a wasteful number, since it uses less digits than its factorization.

799775172903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23335.

The product of its (nonzero) digits is 52509870, while the sum is 66.

The spelling of 799775172903 in words is "seven hundred ninety-nine billion, seven hundred seventy-five million, one hundred seventy-two thousand, nine hundred three".