6600997138 has 16 divisors (see below), whose sum is σ = 10548205920. Its totient is φ = 3089114496.

The previous prime is 6600997127. The next prime is 6600997147. The reversal of 6600997138 is 8317990066.

It is a junction number, because it is equal to n+sod(n) for n = 6600997091 and 6600997100.

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, 1043295 + ... + 1049602.

It is an arithmetic number, because the mean of its divisors is an integer number (659262870).

Almost surely, 2^6600997138 is an apocalyptic number.

6600997138 is a deficient number, since it is larger than the sum of its proper divisors (3947208782).

6600997138 is a wasteful number, since it uses less digits than its factorization.

6600997138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093001.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 6600997138 is about 81246.5207747384. The cubic root of 6600997138 is about 1875.8719157100.

The spelling of 6600997138 in words is "six billion, six hundred million, nine hundred ninety-seven thousand, one hundred thirty-eight".