89958766791 has 4 divisors (see below), whose sum is σ = 119945022392. Its totient is φ = 59972511192.

The previous prime is 89958766763. The next prime is 89958766817. The reversal of 89958766791 is 19766785998.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 89958766791 - 2¹⁴ = 89958750407 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 (89958766691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14993127796 + ... + 14993127801.

It is an arithmetic number, because the mean of its divisors is an integer number (29986255598).

Almost surely, 2^89958766791 is an apocalyptic number.

89958766791 is a deficient number, since it is larger than the sum of its proper divisors (29986255601).

89958766791 is a wasteful number, since it uses less digits than its factorization.

89958766791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29986255600.

The product of its digits is 411505920, while the sum is 75.

The spelling of 89958766791 in words is "eighty-nine billion, nine hundred fifty-eight million, seven hundred sixty-six thousand, seven hundred ninety-one".