2145520053406 has 48 divisors (see below), whose sum is σ = 3431984052960. Its totient is φ = 1005715569600.

The previous prime is 2145520053403. The next prime is 2145520053407. The reversal of 2145520053406 is 6043500255412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145520053403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165453535 + ... + 165466501.

It is an arithmetic number, because the mean of its divisors is an integer number (71499667770).

Almost surely, 2^{2145520053406} is an apocalyptic number.

2145520053406 is a deficient number, since it is larger than the sum of its proper divisors (1286463999554).

2145520053406 is a wasteful number, since it uses less digits than its factorization.

2145520053406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377 (or 15358 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 2145520053406 in words is "two trillion, one hundred forty-five billion, five hundred twenty million, fifty-three thousand, four hundred six".