968898787898989 has 4 divisors (see below), whose sum is σ = 968946378605920. Its totient is φ = 968851197192060.

The previous prime is 968898787898981. The next prime is 968898787898999. The reversal of 968898787898989 is 989898787898869.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 968898787898989 - 2³ = 968898787898981 is a prime.

It is a super-2 number, since 2×968898787898989² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 968898787898989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (968898787898981) 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, 23795322927 + ... + 23795363644.

It is an arithmetic number, because the mean of its divisors is an integer number (242236594651480).

Almost surely, 2^{968898787898989} is an apocalyptic number.

It is an amenable number.

968898787898989 is a deficient number, since it is larger than the sum of its proper divisors (47590706931).

968898787898989 is a wasteful number, since it uses less digits than its factorization.

968898787898989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47590706930.

The product of its digits is 36407410163712, while the sum is 121.

The spelling of 968898787898989 in words is "nine hundred sixty-eight trillion, eight hundred ninety-eight billion, seven hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".