77850972105 has 8 divisors (see below), whose sum is σ = 124561555392. Its totient is φ = 41520518448.

The previous prime is 77850972071. The next prime is 77850972107. The reversal of 77850972105 is 50127905877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77850972105 - 2⁹ = 77850971593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77850972107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2595032389 + ... + 2595032418.

It is an arithmetic number, because the mean of its divisors is an integer number (15570194424).

Almost surely, 2^77850972105 is an apocalyptic number.

It is an amenable number.

77850972105 is a deficient number, since it is larger than the sum of its proper divisors (46710583287).

77850972105 is a wasteful number, since it uses less digits than its factorization.

77850972105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190064815.

The product of its (nonzero) digits is 1234800, while the sum is 51.

The spelling of 77850972105 in words is "seventy-seven billion, eight hundred fifty million, nine hundred seventy-two thousand, one hundred five".