77448018407 has 8 divisors (see below), whose sum is σ = 78710801520. Its totient is φ = 76190690880.

The previous prime is 77448018397. The next prime is 77448018433. The reversal of 77448018407 is 70481084477.

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 77448018407 - 2¹⁶ = 77447952871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77448012407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335269 + ... + 1392062.

It is an arithmetic number, because the mean of its divisors is an integer number (9838850190).

Almost surely, 2^77448018407 is an apocalyptic number.

77448018407 is a deficient number, since it is larger than the sum of its proper divisors (1262783113).

77448018407 is a wasteful number, since it uses less digits than its factorization.

77448018407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727793.

The product of its (nonzero) digits is 1404928, while the sum is 50.

The spelling of 77448018407 in words is "seventy-seven billion, four hundred forty-eight million, eighteen thousand, four hundred seven".