101581025355143 has 4 divisors (see below), whose sum is σ = 101775252937608. Its totient is φ = 101386797772680.

The previous prime is 101581025355133. The next prime is 101581025355167. The reversal of 101581025355143 is 341553520185101.

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 101581025355143 - 2¹⁸ = 101581025092999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101581025355094 and 101581025355103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101581025355133) 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, 97113790448 + ... + 97113791493.

It is an arithmetic number, because the mean of its divisors is an integer number (25443813234402).

Almost surely, 2^{101581025355143} is an apocalyptic number.

101581025355143 is a deficient number, since it is larger than the sum of its proper divisors (194227582465).

101581025355143 is an equidigital number, since it uses as much as digits as its factorization.

101581025355143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194227582464.

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 101581025355143 in words is "one hundred one trillion, five hundred eighty-one billion, twenty-five million, three hundred fifty-five thousand, one hundred forty-three".