6542136090 has 96 divisors (see below), whose sum is σ = 19806374016. Its totient is φ = 1467123840.

The previous prime is 6542136089. The next prime is 6542136103. The reversal of 6542136090 is 906312456.

It is a happy number.

6542136090 is a `hidden beast` number, since 6 + 5 + 42 + 1 + 3 + 609 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64576 + ... + 131355.

It is an arithmetic number, because the mean of its divisors is an integer number (206316396).

Almost surely, 2^6542136090 is an apocalyptic number.

6542136090 is an abundant number, since it is smaller than the sum of its proper divisors (13264237926).

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

6542136090 is a wasteful number, since it uses less digits than its factorization.

6542136090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196004 (or 196001 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6542136090 is about 80883.4722919337. The cubic root of 6542136090 is about 1870.2795477493.

The spelling of 6542136090 in words is "six billion, five hundred forty-two million, one hundred thirty-six thousand, ninety".