1223455567777 has 8 divisors (see below), whose sum is σ = 1233094906976. Its totient is φ = 1213842246912.

The previous prime is 1223455567739. The next prime is 1223455567819. The reversal of 1223455567777 is 7777655543221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223455567777 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223456567777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6410163 + ... + 6598264.

It is an arithmetic number, because the mean of its divisors is an integer number (154136863372).

Almost surely, 2^{1223455567777} is an apocalyptic number.

It is an amenable number.

1223455567777 is a deficient number, since it is larger than the sum of its proper divisors (9639339199).

1223455567777 is a wasteful number, since it uses less digits than its factorization.

1223455567777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13009167.

The product of its digits is 86436000, while the sum is 61.

The spelling of 1223455567777 in words is "one trillion, two hundred twenty-three billion, four hundred fifty-five million, five hundred sixty-seven thousand, seven hundred seventy-seven".