141920549591 has 4 divisors (see below), whose sum is σ = 150268817232. Its totient is φ = 133572281952.

The previous prime is 141920549521. The next prime is 141920549597. The reversal of 141920549591 is 195945029141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195945029141 = 79669 ⋅2459489.

It is a de Polignac number, because none of the positive numbers 2^k-141920549591 is a prime.

It is a super-2 number, since 2×141920549591² (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 (141920549597) 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, 4174133795 + ... + 4174133828.

It is an arithmetic number, because the mean of its divisors is an integer number (37567204308).

Almost surely, 2^141920549591 is an apocalyptic number.

141920549591 is a deficient number, since it is larger than the sum of its proper divisors (8348267641).

141920549591 is an equidigital number, since it uses as much as digits as its factorization.

141920549591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348267640.

The product of its (nonzero) digits is 583200, while the sum is 50.

The spelling of 141920549591 in words is "one hundred forty-one billion, nine hundred twenty million, five hundred forty-nine thousand, five hundred ninety-one".