20155622160 has 160 divisors (see below), whose sum is σ = 64605864960. Its totient is φ = 5192755200.

The previous prime is 20155622159. The next prime is 20155622171. The reversal of 20155622160 is 6122655102.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 5273050 + ... + 5276870.

It is an arithmetic number, because the mean of its divisors is an integer number (403786656).

Almost surely, 2^20155622160 is an apocalyptic number.

20155622160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20155622160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32302932480).

20155622160 is an abundant number, since it is smaller than the sum of its proper divisors (44450242800).

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

20155622160 is a wasteful number, since it uses less digits than its factorization.

20155622160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20155622160 in words is "twenty billion, one hundred fifty-five million, six hundred twenty-two thousand, one hundred sixty".