6443525655131 has 4 divisors (see below), whose sum is σ = 6444804391200. Its totient is φ = 6442246919064.

The previous prime is 6443525655107. The next prime is 6443525655233. The reversal of 6443525655131 is 1315565253446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6443525655131 - 2⁶ = 6443525655067 is a prime.

It is a super-2 number, since 2×6443525655131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6443525655131.

It is not an unprimeable number, because it can be changed into a prime (6443525651131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639360476 + ... + 639370553.

It is an arithmetic number, because the mean of its divisors is an integer number (1611201097800).

Almost surely, 2^{6443525655131} is an apocalyptic number.

6443525655131 is a deficient number, since it is larger than the sum of its proper divisors (1278736069).

6443525655131 is a wasteful number, since it uses less digits than its factorization.

6443525655131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278736068.

The product of its digits is 6480000, while the sum is 50.

The spelling of 6443525655131 in words is "six trillion, four hundred forty-three billion, five hundred twenty-five million, six hundred fifty-five thousand, one hundred thirty-one".