77187906801 has 48 divisors (see below), whose sum is σ = 117054782208. Its totient is φ = 50823936000.

The previous prime is 77187906797. The next prime is 77187906833. The reversal of 77187906801 is 10860978177.

It is not a de Polignac number, because 77187906801 - 2² = 77187906797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77187906001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10574385 + ... + 10581681.

It is an arithmetic number, because the mean of its divisors is an integer number (2438641296).

Almost surely, 2^77187906801 is an apocalyptic number.

It is an amenable number.

77187906801 is a deficient number, since it is larger than the sum of its proper divisors (39866875407).

77187906801 is a wasteful number, since it uses less digits than its factorization.

77187906801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844 (or 7832 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The spelling of 77187906801 in words is "seventy-seven billion, one hundred eighty-seven million, nine hundred six thousand, eight hundred one".