6997777995 has 64 divisors (see below), whose sum is σ = 13035617280. Its totient is φ = 3175469568.

The previous prime is 6997777937. The next prime is 6997778003. The reversal of 6997777995 is 5997777996.

It is not a de Polignac number, because 6997777995 - 2⁸ = 6997777739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111562 + ... + 162608.

It is an arithmetic number, because the mean of its divisors is an integer number (203681520).

Almost surely, 2^6997777995 is an apocalyptic number.

6997777995 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6997777995 is a deficient number, since it is larger than the sum of its proper divisors (6037839285).

6997777995 is a wasteful number, since it uses less digits than its factorization.

6997777995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51124.

The product of its digits is 472588830, while the sum is 75.

The square root of 6997777995 is about 83652.7225797224. The cubic root of 6997777995 is about 1912.7287545590.

Subtracting from 6997777995 its reverse (5997777996), we obtain a palindrome (999999999).

The spelling of 6997777995 in words is "six billion, nine hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred ninety-five".