2190331400085 has 48 divisors (see below), whose sum is σ = 3828762338544. Its totient is φ = 1158309006336.

The previous prime is 2190331400077. The next prime is 2190331400099. The reversal of 2190331400085 is 5800041330912.

2190331400085 is a `hidden beast` number, since 219 + 0 + 3 + 31 + 400 + 0 + 8 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 34385397489 + 2155946002596 = 185433^2 + 1468314^2 .

It is not a de Polignac number, because 2190331400085 - 2³ = 2190331400077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2526657 + ... + 3280953.

It is an arithmetic number, because the mean of its divisors is an integer number (79765882053).

Almost surely, 2^{2190331400085} is an apocalyptic number.

It is an amenable number.

2190331400085 is a deficient number, since it is larger than the sum of its proper divisors (1638430938459).

2190331400085 is a wasteful number, since it uses less digits than its factorization.

2190331400085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754854 (or 754851 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 2190331400085 its reverse (5800041330912), we get a palindrome (7990372730997).

The spelling of 2190331400085 in words is "two trillion, one hundred ninety billion, three hundred thirty-one million, four hundred thousand, eighty-five".