6542209480 has 32 divisors (see below), whose sum is σ = 14770236600. Its totient is φ = 2607947776.

The previous prime is 6542209477. The next prime is 6542209481. The reversal of 6542209480 is 849022456.

It can be written as a sum of positive squares in 4 ways, for example, as 6513458436 + 28751044 = 80706^2 + 5362^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (6542209481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267385 + ... + 290824.

Almost surely, 2^6542209480 is an apocalyptic number.

It is an amenable number.

6542209480 is an abundant number, since it is smaller than the sum of its proper divisors (8228027120).

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

6542209480 is a wasteful number, since it uses less digits than its factorization.

6542209480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558513 (or 558509 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6542209480 is about 80883.9259680191. The cubic root of 6542209480 is about 1870.2865413521.

The spelling of 6542209480 in words is "six billion, five hundred forty-two million, two hundred nine thousand, four hundred eighty".