77745315773446 has 8 divisors (see below), whose sum is σ = 117456951888360. Its totient is φ = 38592998477328.

The previous prime is 77745315773353. The next prime is 77745315773453. The reversal of 77745315773446 is 64437751354777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139829704351 + ... + 139829704906.

It is an arithmetic number, because the mean of its divisors is an integer number (14682118986045).

Almost surely, 2^{77745315773446} is an apocalyptic number.

77745315773446 is a deficient number, since it is larger than the sum of its proper divisors (39711636114914).

77745315773446 is a wasteful number, since it uses less digits than its factorization.

77745315773446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279659409398.

The product of its digits is 1452124800, while the sum is 70.

The spelling of 77745315773446 in words is "seventy-seven trillion, seven hundred forty-five billion, three hundred fifteen million, seven hundred seventy-three thousand, four hundred forty-six".