77804973933 has 4 divisors (see below), whose sum is σ = 103739965248. Its totient is φ = 51869982620.

The previous prime is 77804973893. The next prime is 77804973937. The reversal of 77804973933 is 33937940877.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77804973933 - 2⁸ = 77804973677 is a prime.

It is a super-2 number, since 2×77804973933² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77804973937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12967495653 + ... + 12967495658.

It is an arithmetic number, because the mean of its divisors is an integer number (25934991312).

Almost surely, 2^77804973933 is an apocalyptic number.

It is an amenable number.

77804973933 is a deficient number, since it is larger than the sum of its proper divisors (25934991315).

77804973933 is a wasteful number, since it uses less digits than its factorization.

77804973933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25934991314.

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 77804973933 in words is "seventy-seven billion, eight hundred four million, nine hundred seventy-three thousand, nine hundred thirty-three".