6551294145129 has 24 divisors (see below), whose sum is σ = 9641699418312. Its totient is φ = 4285046688000.

The previous prime is 6551294145073. The next prime is 6551294145139. The reversal of 6551294145129 is 9215414921556.

6551294145129 is a `hidden beast` number, since 6 + 5 + 5 + 129 + 41 + 451 + 29 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2457761675625 + 4093532469504 = 1567725^2 + 2023248^2 .

It is not a de Polignac number, because 6551294145129 - 2³² = 6546999177833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6551294145139) 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, 41181589 + ... + 41340365.

It is an arithmetic number, because the mean of its divisors is an integer number (401737475763).

Almost surely, 2^{6551294145129} is an apocalyptic number.

It is an amenable number.

6551294145129 is a deficient number, since it is larger than the sum of its proper divisors (3090405273183).

6551294145129 is a wasteful number, since it uses less digits than its factorization.

6551294145129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245337 (or 245334 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The spelling of 6551294145129 in words is "six trillion, five hundred fifty-one billion, two hundred ninety-four million, one hundred forty-five thousand, one hundred twenty-nine".