79777011 has 4 divisors (see below), whose sum is σ = 106369352. Its totient is φ = 53184672.

The previous prime is 79777007. The next prime is 79777013. The reversal of 79777011 is 11077797.

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

It is not a de Polignac number, because 79777011 - 2² = 79777007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79777013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13296166 + ... + 13296171.

It is an arithmetic number, because the mean of its divisors is an integer number (26592338).

Almost surely, 2^79777011 is an apocalyptic number.

79777011 is a deficient number, since it is larger than the sum of its proper divisors (26592341).

79777011 is a wasteful number, since it uses less digits than its factorization.

79777011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26592340.

The product of its (nonzero) digits is 21609, while the sum is 39.

The square root of 79777011 is about 8931.7977473743. The cubic root of 79777011 is about 430.4862194285.

The spelling of 79777011 in words is "seventy-nine million, seven hundred seventy-seven thousand, eleven".