101491668503 has 8 divisors (see below), whose sum is σ = 105030535680. Its totient is φ = 97955411680.

The previous prime is 101491668493. The next prime is 101491668539. The reversal of 101491668503 is 305866194101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101491668503 - 2²⁸ = 101223233047 is a prime.

It is a super-2 number, since 2×101491668503² (a number of 23 digits) contains 22 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 (101491665503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573308 + ... + 729153.

It is an arithmetic number, because the mean of its divisors is an integer number (13128816960).

Almost surely, 2^101491668503 is an apocalyptic number.

101491668503 is a deficient number, since it is larger than the sum of its proper divisors (3538867177).

101491668503 is a wasteful number, since it uses less digits than its factorization.

101491668503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305177.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 101491668503 in words is "one hundred one billion, four hundred ninety-one million, six hundred sixty-eight thousand, five hundred three".