20977877323 has 8 divisors (see below), whose sum is σ = 22593738608. Its totient is φ = 19362327264.

The previous prime is 20977877317. The next prime is 20977877341. The reversal of 20977877323 is 32377877902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20977877323 - 2⁹ = 20977876811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20977877353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73036 + ... + 217462.

It is an arithmetic number, because the mean of its divisors is an integer number (2824217326).

Almost surely, 2^20977877323 is an apocalyptic number.

20977877323 is a deficient number, since it is larger than the sum of its proper divisors (1615861285).

20977877323 is a wasteful number, since it uses less digits than its factorization.

20977877323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155613.

The product of its (nonzero) digits is 6223392, while the sum is 55.

The spelling of 20977877323 in words is "twenty billion, nine hundred seventy-seven million, eight hundred seventy-seven thousand, three hundred twenty-three".