2145005215008 has 48 divisors (see below), whose sum is σ = 5633664757056. Its totient is φ = 714617475840.

The previous prime is 2145005214971. The next prime is 2145005215009. The reversal of 2145005215008 is 8005125005412.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×2145005215008³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2145005215008.

It is not an unprimeable number, because it can be changed into a prime (2145005215009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5824516 + ... + 6181827.

It is an arithmetic number, because the mean of its divisors is an integer number (117368015772).

Almost surely, 2^{2145005215008} is an apocalyptic number.

It is an amenable number.

2145005215008 is an abundant number, since it is smaller than the sum of its proper divisors (3488659542048).

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

2145005215008 is a wasteful number, since it uses less digits than its factorization.

2145005215008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12008217 (or 12008209 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The spelling of 2145005215008 in words is "two trillion, one hundred forty-five billion, five million, two hundred fifteen thousand, eight".