77249894276 has 48 divisors (see below), whose sum is σ = 144339511680. Its totient is φ = 36049282560.

The previous prime is 77249894261. The next prime is 77249894291. The reversal of 77249894276 is 67249894277.

It is an interprime number because it is at equal distance from previous prime (77249894261) and next prime (77249894291).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4409831 + ... + 4427313.

It is an arithmetic number, because the mean of its divisors is an integer number (3007073160).

Almost surely, 2^77249894276 is an apocalyptic number.

It is an amenable number.

77249894276 is a deficient number, since it is larger than the sum of its proper divisors (67089617404).

77249894276 is a wasteful number, since it uses less digits than its factorization.

77249894276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18044 (or 18042 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 65.

Subtracting from 77249894276 its reverse (67249894277), we obtain a palindrome (9999999999).

The spelling of 77249894276 in words is "seventy-seven billion, two hundred forty-nine million, eight hundred ninety-four thousand, two hundred seventy-six".