549775577945 has 16 divisors (see below), whose sum is σ = 719720899200. Its totient is φ = 399828624000.

The previous prime is 549775577933. The next prime is 549775577957.

It is a happy number.

549775577945 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (549775577933) and next prime (549775577957).

It is not a de Polignac number, because 549775577945 - 2¹⁸ = 549775315801 is a prime.

It is a super-2 number, since 2×549775577945² (a number of 24 digits) contains 22 as substring.

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, 4437845 + ... + 4560045.

It is an arithmetic number, because the mean of its divisors is an integer number (44982556200).

Almost surely, 2^549775577945 is an apocalyptic number.

549775577945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

549775577945 is a deficient number, since it is larger than the sum of its proper divisors (169945321255).

549775577945 is a wasteful number, since it uses less digits than its factorization.

549775577945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204016.

The product of its digits is 1944810000, while the sum is 74.

The spelling of 549775577945 in words is "five hundred forty-nine billion, seven hundred seventy-five million, five hundred seventy-seven thousand, nine hundred forty-five".