89656316801 has 4 divisors (see below), whose sum is σ = 89656928004. Its totient is φ = 89655705600.

The previous prime is 89656316797. The next prime is 89656316831. The reversal of 89656316801 is 10861365698.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11213751025 + 78442565776 = 105895^2 + 280076^2 .

It is a cyclic number.

It is not a de Polignac number, because 89656316801 - 2² = 89656316797 is a prime.

It is a deceptive number, since it divides R_89656316800.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89656316831) 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, 61121 + ... + 427841.

It is an arithmetic number, because the mean of its divisors is an integer number (22414232001).

It is a Poulet number, since it divides 2^89656316800-1.

Almost surely, 2^89656316801 is an apocalyptic number.

89656316801 is the 244481-st pentagonal number.

It is an amenable number.

89656316801 is a deficient number, since it is larger than the sum of its proper divisors (611203).

89656316801 is a wasteful number, since it uses less digits than its factorization.

89656316801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611202.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 89656316801 in words is "eighty-nine billion, six hundred fifty-six million, three hundred sixteen thousand, eight hundred one".