77868192044 has 6 divisors (see below), whose sum is σ = 136269336084. Its totient is φ = 38934096020.

The previous prime is 77868192013. The next prime is 77868192049. The reversal of 77868192044 is 44029186877.

It is not an unprimeable number, because it can be changed into a prime (77868192049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9733524002 + ... + 9733524009.

It is an arithmetic number, because the mean of its divisors is an integer number (22711556014).

Almost surely, 2^77868192044 is an apocalyptic number.

It is an amenable number.

77868192044 is a deficient number, since it is larger than the sum of its proper divisors (58401144040).

77868192044 is a wasteful number, since it uses less digits than its factorization.

77868192044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467048015 (or 19467048013 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 77868192044 in words is "seventy-seven billion, eight hundred sixty-eight million, one hundred ninety-two thousand, forty-four".