20673177888 has 48 divisors (see below), whose sum is σ = 59200466976. Its totient is φ = 6264599040.

The previous prime is 20673177881. The next prime is 20673177893. The reversal of 20673177888 is 88877137602.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20673177881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9787381 + ... + 9789492.

It is an arithmetic number, because the mean of its divisors is an integer number (1233343062).

Almost surely, 2^20673177888 is an apocalyptic number.

It is an amenable number.

20673177888 is an abundant number, since it is smaller than the sum of its proper divisors (38527289088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20673177888 is a wasteful number, since it uses less digits than its factorization.

20673177888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19576897 (or 19576889 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 20673177888 in words is "twenty billion, six hundred seventy-three million, one hundred seventy-seven thousand, eight hundred eighty-eight".