20888686047 has 16 divisors (see below), whose sum is σ = 27898795008. Its totient is φ = 13902208320.

The previous prime is 20888686037. The next prime is 20888686067. The reversal of 20888686047 is 74068688802.

It is a happy number.

It is not a de Polignac number, because 20888686047 - 2¹⁹ = 20888161759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20888686037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8060722 + ... + 8063312.

It is an arithmetic number, because the mean of its divisors is an integer number (1743674688).

Almost surely, 2^20888686047 is an apocalyptic number.

20888686047 is a deficient number, since it is larger than the sum of its proper divisors (7010108961).

20888686047 is a wasteful number, since it uses less digits than its factorization.

20888686047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 20888686047 in words is "twenty billion, eight hundred eighty-eight million, six hundred eighty-six thousand, forty-seven".