77923548707 has 4 divisors (see below), whose sum is σ = 78246883176. Its totient is φ = 77600214240.

The previous prime is 77923548697. The next prime is 77923548721. The reversal of 77923548707 is 70784532977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70784532977 = 29339 ⋅2412643.

It is a cyclic number.

It is not a de Polignac number, because 77923548707 - 2⁶ = 77923548643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77923548757) 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, 161666873 + ... + 161667354.

It is an arithmetic number, because the mean of its divisors is an integer number (19561720794).

Almost surely, 2^77923548707 is an apocalyptic number.

77923548707 is a deficient number, since it is larger than the sum of its proper divisors (323334469).

77923548707 is a wasteful number, since it uses less digits than its factorization.

77923548707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323334468.

The product of its (nonzero) digits is 20744640, while the sum is 59.

The spelling of 77923548707 in words is "seventy-seven billion, nine hundred twenty-three million, five hundred forty-eight thousand, seven hundred seven".