77850319401 has 32 divisors (see below), whose sum is σ = 124187990400. Its totient is φ = 48019322880.

The previous prime is 77850319387. The next prime is 77850319409. The reversal of 77850319401 is 10491305877.

It is not a de Polignac number, because 77850319401 - 2⁵ = 77850319369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77850319409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1410280 + ... + 1464441.

It is an arithmetic number, because the mean of its divisors is an integer number (3880874700).

Almost surely, 2^77850319401 is an apocalyptic number.

It is an amenable number.

77850319401 is a deficient number, since it is larger than the sum of its proper divisors (46337670999).

77850319401 is a wasteful number, since it uses less digits than its factorization.

77850319401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874806 (or 2874800 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 77850319401 in words is "seventy-seven billion, eight hundred fifty million, three hundred nineteen thousand, four hundred one".