2145355221150 has 144 divisors (see below), whose sum is σ = 6139452612384. Its totient is φ = 535217571840.

The previous prime is 2145355221131. The next prime is 2145355221169. The reversal of 2145355221150 is 511225535412.

2145355221150 is a `hidden beast` number, since 2 + 1 + 4 + 53 + 552 + 2 + 1 + 1 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (2145355221131) and next prime (2145355221169).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 437914 + ... + 2117186.

It is an arithmetic number, because the mean of its divisors is an integer number (42635087586).

Almost surely, 2^{2145355221150} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145355221150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3069726306192).

2145355221150 is an abundant number, since it is smaller than the sum of its proper divisors (3994097391234).

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

2145355221150 is a wasteful number, since it uses less digits than its factorization.

2145355221150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679475 (or 1679467 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 2145355221150 in words is "two trillion, one hundred forty-five billion, three hundred fifty-five million, two hundred twenty-one thousand, one hundred fifty".