945777777549 has 12 divisors (see below), whose sum is σ = 1386098561568. Its totient is φ = 573198652840.

The previous prime is 945777777517. The next prime is 945777777617.

945777777549 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 945777777549 - 2⁵ = 945777777517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945777777509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1302723849 + ... + 1302724574.

It is an arithmetic number, because the mean of its divisors is an integer number (115508213464).

Almost surely, 2^945777777549 is an apocalyptic number.

It is an amenable number.

945777777549 is a deficient number, since it is larger than the sum of its proper divisors (440320784019).

945777777549 is a wasteful number, since it uses less digits than its factorization.

945777777549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605448448 (or 2605448437 counting only the distinct ones).

The product of its digits is 3811827600, while the sum is 78.

The spelling of 945777777549 in words is "nine hundred forty-five billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, five hundred forty-nine".