141988661 has 4 divisors (see below), whose sum is σ = 142021824. Its totient is φ = 141955500.

The previous prime is 141988657. The next prime is 141988687. The reversal of 141988661 is 166889141.

141988661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 141988661 - 2² = 141988657 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141988601) 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, 9005 + ... + 19106.

It is an arithmetic number, because the mean of its divisors is an integer number (35505456).

Almost surely, 2^141988661 is an apocalyptic number.

It is an amenable number.

141988661 is a deficient number, since it is larger than the sum of its proper divisors (33163).

141988661 is an equidigital number, since it uses as much as digits as its factorization.

141988661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33162.

The product of its digits is 82944, while the sum is 44.

The square root of 141988661 is about 11915.8995044436. The cubic root of 141988661 is about 521.6964577002.

The spelling of 141988661 in words is "one hundred forty-one million, nine hundred eighty-eight thousand, six hundred sixty-one".