20848211049 has 4 divisors (see below), whose sum is σ = 27797614736. Its totient is φ = 13898807364.

The previous prime is 20848211023. The next prime is 20848211053. The reversal of 20848211049 is 94011284802.

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 de Polignac number, because none of the positive numbers 2^k-20848211049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20848210998 and 20848211016.

It is not an unprimeable number, because it can be changed into a prime (20848211009) 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, 3474701839 + ... + 3474701844.

It is an arithmetic number, because the mean of its divisors is an integer number (6949403684).

Almost surely, 2^20848211049 is an apocalyptic number.

It is an amenable number.

20848211049 is a deficient number, since it is larger than the sum of its proper divisors (6949403687).

20848211049 is an equidigital number, since it uses as much as digits as its factorization.

20848211049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6949403686.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 20848211049 in words is "twenty billion, eight hundred forty-eight million, two hundred eleven thousand, forty-nine".