100968891643 has 4 divisors (see below), whose sum is σ = 100970733888. Its totient is φ = 100967049400.

The previous prime is 100968891581. The next prime is 100968891659. The reversal of 100968891643 is 346198869001.

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

It is a cyclic number.

It is not a de Polignac number, because 100968891643 - 2¹³ = 100968883451 is a prime.

It is a super-3 number, since 3×100968891643³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100968891343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836308 + ... + 949393.

It is an arithmetic number, because the mean of its divisors is an integer number (25242683472).

Almost surely, 2^100968891643 is an apocalyptic number.

100968891643 is a deficient number, since it is larger than the sum of its proper divisors (1842245).

100968891643 is an equidigital number, since it uses as much as digits as its factorization.

100968891643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842244.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 100968891643 in words is "one hundred billion, nine hundred sixty-eight million, eight hundred ninety-one thousand, six hundred forty-three".