2152202200040 has 128 divisors (see below), whose sum is σ = 4957852989600. Its totient is φ = 840534589440.

The previous prime is 2152202200013. The next prime is 2152202200061. The reversal of 2152202200040 is 400022022512.

It can be written as a sum of positive squares in 16 ways, for example, as 209183657956 + 1943018542084 = 457366^2 + 1393922^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2152202199985 and 2152202200021.

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, 386458376 + ... + 386463944.

Almost surely, 2^{2152202200040} is an apocalyptic number.

2152202200040 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 2152202200040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478926494800).

2152202200040 is an abundant number, since it is smaller than the sum of its proper divisors (2805650789560).

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

2152202200040 is a wasteful number, since it uses less digits than its factorization.

2152202200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487 (or 6483 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 2152202200040 its reverse (400022022512), we get a palindrome (2552224222552).

The spelling of 2152202200040 in words is "two trillion, one hundred fifty-two billion, two hundred two million, two hundred thousand, forty".