77137081246 has 4 divisors (see below), whose sum is σ = 115705621872. Its totient is φ = 38568540622.

The previous prime is 77137081183. The next prime is 77137081247. The reversal of 77137081246 is 64218073177.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77137081196 and 77137081205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77137081247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19284270310 + ... + 19284270313.

It is an arithmetic number, because the mean of its divisors is an integer number (28926405468).

Almost surely, 2^77137081246 is an apocalyptic number.

77137081246 is a deficient number, since it is larger than the sum of its proper divisors (38568540626).

77137081246 is a wasteful number, since it uses less digits than its factorization.

77137081246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38568540625.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 77137081246 in words is "seventy-seven billion, one hundred thirty-seven million, eighty-one thousand, two hundred forty-six".