77604193331 has 4 divisors (see below), whose sum is σ = 88690506672. Its totient is φ = 66517879992.

The previous prime is 77604193321. The next prime is 77604193363. The reversal of 77604193331 is 13339140677.

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 77604193331 - 2⁶ = 77604193267 is a prime.

It is a super-2 number, since 2×77604193331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77604193321) 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, 5543156660 + ... + 5543156673.

It is an arithmetic number, because the mean of its divisors is an integer number (22172626668).

Almost surely, 2^77604193331 is an apocalyptic number.

77604193331 is a deficient number, since it is larger than the sum of its proper divisors (11086313341).

77604193331 is a wasteful number, since it uses less digits than its factorization.

77604193331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086313340.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 77604193331 in words is "seventy-seven billion, six hundred four million, one hundred ninety-three thousand, three hundred thirty-one".