6542656434 has 24 divisors (see below), whose sum is σ = 14177262060. Its totient is φ = 2180653728.

The previous prime is 6542656427. The next prime is 6542656451. The reversal of 6542656434 is 4346562456.

It is a happy number.

6542656434 is a `hidden beast` number, since 6 + 54 + 2 + 6 + 564 + 34 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4376219409 + 2166437025 = 66153^2 + 46545^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6542656434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280924 + ... + 303320.

Almost surely, 2^6542656434 is an apocalyptic number.

6542656434 is an abundant number, since it is smaller than the sum of its proper divisors (7634605626).

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

6542656434 is a wasteful number, since it uses less digits than its factorization.

6542656434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38634 (or 38631 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 6542656434 is about 80886.6888554600. The cubic root of 6542656434 is about 1870.3291321117.

It can be divided in two parts, 6542 and 656434, that added together give a triangular number (662976 = T₁₁₅₁).

The spelling of 6542656434 in words is "six billion, five hundred forty-two million, six hundred fifty-six thousand, four hundred thirty-four".