28691152719943 has 16 divisors (see below), whose sum is σ = 34817059137600. Its totient is φ = 23080234991616.

The previous prime is 28691152719941. The next prime is 28691152719959. The reversal of 28691152719943 is 34991725119682.

It is a cyclic number.

It is not a de Polignac number, because 28691152719943 - 2¹ = 28691152719941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28691152719941) 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, 341462418 + ... + 341546431.

It is an arithmetic number, because the mean of its divisors is an integer number (2176066196100).

Almost surely, 2^{28691152719943} is an apocalyptic number.

28691152719943 is a deficient number, since it is larger than the sum of its proper divisors (6125906417657).

28691152719943 is a wasteful number, since it uses less digits than its factorization.

28691152719943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683009226.

The product of its digits is 58786560, while the sum is 67.

The spelling of 28691152719943 in words is "twenty-eight trillion, six hundred ninety-one billion, one hundred fifty-two million, seven hundred nineteen thousand, nine hundred forty-three".