6542266516 has 24 divisors (see below), whose sum is σ = 11844360360. Its totient is φ = 3159744000.

The previous prime is 6542266483. The next prime is 6542266547. The reversal of 6542266516 is 6156622456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1472256900 + 5070009616 = 38370^2 + 71204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180921 + ... + 214048.

It is an arithmetic number, because the mean of its divisors is an integer number (493515015).

Almost surely, 2^6542266516 is an apocalyptic number.

It is an amenable number.

6542266516 is a deficient number, since it is larger than the sum of its proper divisors (5302093844).

6542266516 is a wasteful number, since it uses less digits than its factorization.

6542266516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395115 (or 395113 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 6542266516 is about 80884.2785465754. The cubic root of 6542266516 is about 1870.2919764859.

The spelling of 6542266516 in words is "six billion, five hundred forty-two million, two hundred sixty-six thousand, five hundred sixteen".