141981920068 has 6 divisors (see below), whose sum is σ = 248468360126. Its totient is φ = 70990960032.

The previous prime is 141981920021. The next prime is 141981920071. The reversal of 141981920068 is 860029189141.

It can be written as a sum of positive squares in only one way, i.e., 115866713664 + 26115206404 = 340392^2 + 161602^2 .

It is a super-2 number, since 2×141981920068² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17747740005 + ... + 17747740012.

Almost surely, 2^141981920068 is an apocalyptic number.

It is an amenable number.

141981920068 is a deficient number, since it is larger than the sum of its proper divisors (106486440058).

141981920068 is a wasteful number, since it uses less digits than its factorization.

141981920068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35495480021 (or 35495480019 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The spelling of 141981920068 in words is "one hundred forty-one billion, nine hundred eighty-one million, nine hundred twenty thousand, sixty-eight".