77147045445 has 16 divisors (see below), whose sum is σ = 123443579520. Its totient is φ = 41142321984.

The previous prime is 77147045429. The next prime is 77147045473. The reversal of 77147045445 is 54454074177.

It is a happy number.

It is not a de Polignac number, because 77147045445 - 2⁴ = 77147045429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77147045394 and 77147045403.

It is a congruent number.

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, 68107 + ... + 398663.

It is an arithmetic number, because the mean of its divisors is an integer number (7715223720).

Almost surely, 2^77147045445 is an apocalyptic number.

It is an amenable number.

77147045445 is a deficient number, since it is larger than the sum of its proper divisors (46296534075).

77147045445 is a wasteful number, since it uses less digits than its factorization.

77147045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346124.

The product of its (nonzero) digits is 2195200, while the sum is 48.

The spelling of 77147045445 in words is "seventy-seven billion, one hundred forty-seven million, forty-five thousand, four hundred forty-five".