6557900799 has 16 divisors (see below), whose sum is σ = 8999222400. Its totient is φ = 4246042656.

The previous prime is 6557900777. The next prime is 6557900809. The reversal of 6557900799 is 9970097556.

It is not a de Polignac number, because 6557900799 - 2¹² = 6557896703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557901799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208504 + ... + 237885.

It is an arithmetic number, because the mean of its divisors is an integer number (562451400).

Almost surely, 2^6557900799 is an apocalyptic number.

6557900799 is a deficient number, since it is larger than the sum of its proper divisors (2441321601).

6557900799 is a wasteful number, since it uses less digits than its factorization.

6557900799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446534.

The product of its (nonzero) digits is 5358150, while the sum is 57.

The square root of 6557900799 is about 80980.8668698971. The cubic root of 6557900799 is about 1871.7806253290.

The spelling of 6557900799 in words is "six billion, five hundred fifty-seven million, nine hundred thousand, seven hundred ninety-nine".