1226551576945 has 8 divisors (see below), whose sum is σ = 1549328307840. Its totient is φ = 929596984560.

The previous prime is 1226551576897. The next prime is 1226551576979. The reversal of 1226551576945 is 5496751556221.

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

It is not a de Polignac number, because 1226551576945 - 2¹⁵ = 1226551544177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226551576945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6455534521 + ... + 6455534710.

It is an arithmetic number, because the mean of its divisors is an integer number (193666038480).

Almost surely, 2^{1226551576945} is an apocalyptic number.

It is an amenable number.

1226551576945 is a deficient number, since it is larger than the sum of its proper divisors (322776730895).

1226551576945 is a wasteful number, since it uses less digits than its factorization.

1226551576945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911069255.

The product of its digits is 22680000, while the sum is 58.

The spelling of 1226551576945 in words is "one trillion, two hundred twenty-six billion, five hundred fifty-one million, five hundred seventy-six thousand, nine hundred forty-five".