77404440734 has 12 divisors (see below), whose sum is σ = 120248399544. Its totient is φ = 37367660232.

The previous prime is 77404440731. The next prime is 77404440779. The reversal of 77404440734 is 43704440477.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77404440731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23007962 + ... + 23011325.

It is an arithmetic number, because the mean of its divisors is an integer number (10020699962).

Almost surely, 2^77404440734 is an apocalyptic number.

77404440734 is a deficient number, since it is larger than the sum of its proper divisors (42843958810).

77404440734 is a wasteful number, since it uses less digits than its factorization.

77404440734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46019347 (or 46019318 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 44.

The spelling of 77404440734 in words is "seventy-seven billion, four hundred four million, four hundred forty thousand, seven hundred thirty-four".