20617167012 has 96 divisors (see below), whose sum is σ = 53325842304. Its totient is φ = 6159283200.

The previous prime is 20617166917. The next prime is 20617167071. The reversal of 20617167012 is 21076171602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1341918 + ... + 1357194.

It is an arithmetic number, because the mean of its divisors is an integer number (555477524).

Almost surely, 2^20617167012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20617167012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26662921152).

20617167012 is an abundant number, since it is smaller than the sum of its proper divisors (32708675292).

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

20617167012 is a wasteful number, since it uses less digits than its factorization.

20617167012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15549 (or 15547 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The spelling of 20617167012 in words is "twenty billion, six hundred seventeen million, one hundred sixty-seven thousand, twelve".