6977998081099 has 4 divisors (see below), whose sum is σ = 6978199089240. Its totient is φ = 6977797072960.

The previous prime is 6977998080997. The next prime is 6977998081127. The reversal of 6977998081099 is 9901808997796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6977998081099 - 2¹⁵ = 6977998048331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6977998981099) 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 3 ways as a sum of consecutive naturals, for example, 100451989 + ... + 100521430.

It is an arithmetic number, because the mean of its divisors is an integer number (1744549772310).

Almost surely, 2^{6977998081099} is an apocalyptic number.

6977998081099 is a deficient number, since it is larger than the sum of its proper divisors (201008141).

6977998081099 is a wasteful number, since it uses less digits than its factorization.

6977998081099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201008140.

The product of its (nonzero) digits is 1111065984, while the sum is 82.

The spelling of 6977998081099 in words is "six trillion, nine hundred seventy-seven billion, nine hundred ninety-eight million, eighty-one thousand, ninety-nine".