6397556099 has 8 divisors (see below), whose sum is σ = 7282593792. Its totient is φ = 5563092040.

The previous prime is 6397556083. The next prime is 6397556119. The reversal of 6397556099 is 9906557936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6397556099 - 2⁴ = 6397556083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6397550099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12643139 + ... + 12643644.

It is an arithmetic number, because the mean of its divisors is an integer number (910324224).

Almost surely, 2^6397556099 is an apocalyptic number.

6397556099 is a deficient number, since it is larger than the sum of its proper divisors (885037693).

6397556099 is a wasteful number, since it uses less digits than its factorization.

6397556099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25286817.

The product of its (nonzero) digits is 13778100, while the sum is 59.

The square root of 6397556099 is about 79984.7241603045. The cubic root of 6397556099 is about 1856.3991786996.

The spelling of 6397556099 in words is "six billion, three hundred ninety-seven million, five hundred fifty-six thousand, ninety-nine".