101663315989 has 4 divisors (see below), whose sum is σ = 101717770624. Its totient is φ = 101608861356.

The previous prime is 101663315981. The next prime is 101663316047. The reversal of 101663315989 is 989513366101.

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 101663315989 - 2³ = 101663315981 is a prime.

It is a super-3 number, since 3×101663315989³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101663315981) 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, 27224517 + ... + 27228250.

It is an arithmetic number, because the mean of its divisors is an integer number (25429442656).

Almost surely, 2^101663315989 is an apocalyptic number.

It is an amenable number.

101663315989 is a deficient number, since it is larger than the sum of its proper divisors (54454635).

101663315989 is an equidigital number, since it uses as much as digits as its factorization.

101663315989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54454634.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The spelling of 101663315989 in words is "one hundred one billion, six hundred sixty-three million, three hundred fifteen thousand, nine hundred eighty-nine".