77375324779 has 4 divisors (see below), whose sum is σ = 77376919984. Its totient is φ = 77373729576.

The previous prime is 77375324759. The next prime is 77375324783. The reversal of 77375324779 is 97742357377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97742357377 = 7 ⋅13963193911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77375324779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77375324749) 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, 722487 + ... + 822640.

It is an arithmetic number, because the mean of its divisors is an integer number (19344229996).

Almost surely, 2^77375324779 is an apocalyptic number.

77375324779 is a deficient number, since it is larger than the sum of its proper divisors (1595205).

77375324779 is a wasteful number, since it uses less digits than its factorization.

77375324779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595204.

The product of its digits is 54454680, while the sum is 61.

The spelling of 77375324779 in words is "seventy-seven billion, three hundred seventy-five million, three hundred twenty-four thousand, seven hundred seventy-nine".