20677146323 has 4 divisors (see below), whose sum is σ = 20968373808. Its totient is φ = 20385918840.

The previous prime is 20677146317. The next prime is 20677146377. The reversal of 20677146323 is 32364177602.

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 20677146323 - 2¹⁴ = 20677129939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20677146383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145613636 + ... + 145613777.

It is an arithmetic number, because the mean of its divisors is an integer number (5242093452).

Almost surely, 2^20677146323 is an apocalyptic number.

20677146323 is a deficient number, since it is larger than the sum of its proper divisors (291227485).

20677146323 is an equidigital number, since it uses as much as digits as its factorization.

20677146323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291227484.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 20677146323 in words is "twenty billion, six hundred seventy-seven million, one hundred forty-six thousand, three hundred twenty-three".