85663423726 has 4 divisors (see below), whose sum is σ = 128495135592. Its totient is φ = 42831711862.

The previous prime is 85663423723. The next prime is 85663423763. The reversal of 85663423726 is 62732436658.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663423723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21415855930 + ... + 21415855933.

It is an arithmetic number, because the mean of its divisors is an integer number (32123783898).

Almost surely, 2^85663423726 is an apocalyptic number.

85663423726 is a deficient number, since it is larger than the sum of its proper divisors (42831711866).

85663423726 is a wasteful number, since it uses less digits than its factorization.

85663423726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42831711865.

The product of its digits is 8709120, while the sum is 52.

The spelling of 85663423726 in words is "eighty-five billion, six hundred sixty-three million, four hundred twenty-three thousand, seven hundred twenty-six".