146920689128879 has 4 divisors (see below), whose sum is σ = 146982187954680. Its totient is φ = 146859190303080.

The previous prime is 146920689128861. The next prime is 146920689128921. The reversal of 146920689128879 is 978821986029641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146920689128879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146920689128809) 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, 30749409317 + ... + 30749414094.

It is an arithmetic number, because the mean of its divisors is an integer number (36745546988670).

Almost surely, 2^{146920689128879} is an apocalyptic number.

146920689128879 is a deficient number, since it is larger than the sum of its proper divisors (61498825801).

146920689128879 is an equidigital number, since it uses as much as digits as its factorization.

146920689128879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61498825800.

The product of its (nonzero) digits is 1504935936, while the sum is 80.

The spelling of 146920689128879 in words is "one hundred forty-six trillion, nine hundred twenty billion, six hundred eighty-nine million, one hundred twenty-eight thousand, eight hundred seventy-nine".