77945011 has 8 divisors (see below), whose sum is σ = 84877200. Its totient is φ = 71295840.

The previous prime is 77944969. The next prime is 77945081. The reversal of 77945011 is 11054977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77945011 - 2⁷ = 77944883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77945081) 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 7 ways as a sum of consecutive naturals, for example, 70180 + ... + 71281.

It is an arithmetic number, because the mean of its divisors is an integer number (10609650).

Almost surely, 2^77945011 is an apocalyptic number.

77945011 is a deficient number, since it is larger than the sum of its proper divisors (6932189).

77945011 is a wasteful number, since it uses less digits than its factorization.

77945011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141509.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 77945011 is about 8828.6471783620. The cubic root of 77945011 is about 427.1654389125.

Subtracting from 77945011 its sum of digits (34), we obtain a palindrome (77944977).

Adding to 77945011 its reverse (11054977), we get a palindrome (88999988).

The spelling of 77945011 in words is "seventy-seven million, nine hundred forty-five thousand, eleven".