20898314777 has 8 divisors (see below), whose sum is σ = 20964001632. Its totient is φ = 20832660000.

The previous prime is 20898314741. The next prime is 20898314813. The reversal of 20898314777 is 77741389802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20898314741) and next prime (20898314813).

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 20898314777 - 2¹⁰ = 20898313753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20898314737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2317277 + ... + 2326277.

It is an arithmetic number, because the mean of its divisors is an integer number (2620500204).

Almost surely, 2^20898314777 is an apocalyptic number.

It is an amenable number.

20898314777 is a deficient number, since it is larger than the sum of its proper divisors (65686855).

20898314777 is an equidigital number, since it uses as much as digits as its factorization.

20898314777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16039.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 20898314777 in words is "twenty billion, eight hundred ninety-eight million, three hundred fourteen thousand, seven hundred seventy-seven".