101689244205481 has 4 divisors (see below), whose sum is σ = 107041309690000. Its totient is φ = 96337178720964.

The previous prime is 101689244205457. The next prime is 101689244205499. The reversal of 101689244205481 is 184502442986101.

It is a happy number.

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 101689244205481 - 2²¹ = 101689242108329 is a prime.

It is a super-2 number, since 2×101689244205481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101689244205431) 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, 2676032742231 + ... + 2676032742268.

It is an arithmetic number, because the mean of its divisors is an integer number (26760327422500).

Almost surely, 2^{101689244205481} is an apocalyptic number.

It is an amenable number.

101689244205481 is a deficient number, since it is larger than the sum of its proper divisors (5352065484519).

101689244205481 is an equidigital number, since it uses as much as digits as its factorization.

101689244205481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352065484518.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 101689244205481 in words is "one hundred one trillion, six hundred eighty-nine billion, two hundred forty-four million, two hundred five thousand, four hundred eighty-one".