77043278445 has 48 divisors (see below), whose sum is σ = 143477700480. Its totient is φ = 35199432576.

The previous prime is 77043278443. The next prime is 77043278479. The reversal of 77043278445 is 54487234077.

It is not a de Polignac number, because 77043278445 - 2¹ = 77043278443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77043278441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1281111 + ... + 1339899.

It is an arithmetic number, because the mean of its divisors is an integer number (2989118760).

Almost surely, 2^77043278445 is an apocalyptic number.

It is an amenable number.

77043278445 is a deficient number, since it is larger than the sum of its proper divisors (66434422035).

77043278445 is a wasteful number, since it uses less digits than its factorization.

77043278445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60594 (or 60587 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 51.

The spelling of 77043278445 in words is "seventy-seven billion, forty-three million, two hundred seventy-eight thousand, four hundred forty-five".