1226560953955 has 4 divisors (see below), whose sum is σ = 1471873144752. Its totient is φ = 981248763160.

The previous prime is 1226560953953. The next prime is 1226560953971. The reversal of 1226560953955 is 5593590656221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1226560953955 - 2¹ = 1226560953953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226560953955.

It is not an unprimeable number, because it can be changed into a prime (1226560953953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122656095391 + ... + 122656095400.

It is an arithmetic number, because the mean of its divisors is an integer number (367968286188).

Almost surely, 2^{1226560953955} is an apocalyptic number.

1226560953955 is a deficient number, since it is larger than the sum of its proper divisors (245312190797).

1226560953955 is an equidigital number, since it uses as much as digits as its factorization.

1226560953955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245312190796.

The product of its (nonzero) digits is 21870000, while the sum is 58.

The spelling of 1226560953955 in words is "one trillion, two hundred twenty-six billion, five hundred sixty million, nine hundred fifty-three thousand, nine hundred fifty-five".