20167290897528 has 128 divisors (see below), whose sum is σ = 52161253447680. Its totient is φ = 6491015032320.

The previous prime is 20167290897521. The next prime is 20167290897541. The reversal of 20167290897528 is 82579809276102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20167290897521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628581375 + ... + 628613457.

It is an arithmetic number, because the mean of its divisors is an integer number (407509792560).

Almost surely, 2^{20167290897528} 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 20167290897528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26080626723840).

20167290897528 is an abundant number, since it is smaller than the sum of its proper divisors (31993962550152).

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

20167290897528 is a wasteful number, since it uses less digits than its factorization.

20167290897528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33989 (or 33985 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 20167290897528 in words is "twenty trillion, one hundred sixty-seven billion, two hundred ninety million, eight hundred ninety-seven thousand, five hundred twenty-eight".