20156220016410 has 128 divisors (see below), whose sum is σ = 50276666179584. Its totient is φ = 5168531531520.

The previous prime is 20156220016403. The next prime is 20156220016417. The reversal of 20156220016410 is 1461002265102.

It is an interprime number because it is at equal distance from previous prime (20156220016403) and next prime (20156220016417).

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

It is not an unprimeable number, because it can be changed into a prime (20156220016417) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17897800 + ... + 18990620.

It is an arithmetic number, because the mean of its divisors is an integer number (392786454528).

Almost surely, 2^{20156220016410} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20156220016410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25138333089792).

20156220016410 is an abundant number, since it is smaller than the sum of its proper divisors (30120446163174).

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

20156220016410 is a wasteful number, since it uses less digits than its factorization.

20156220016410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093108.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20156220016410 in words is "twenty trillion, one hundred fifty-six billion, two hundred twenty million, sixteen thousand, four hundred ten".