1226752001845 has 4 divisors (see below), whose sum is σ = 1472102402220. Its totient is φ = 981401601472.

The previous prime is 1226752001807. The next prime is 1226752001861. The reversal of 1226752001845 is 5481002576221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 967514206129 + 259237795716 = 983623^2 + 509154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226752001845 - 2²³ = 1226743613237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122675200180 + ... + 122675200189.

It is an arithmetic number, because the mean of its divisors is an integer number (368025600555).

Almost surely, 2^{1226752001845} is an apocalyptic number.

It is an amenable number.

1226752001845 is a deficient number, since it is larger than the sum of its proper divisors (245350400375).

1226752001845 is an equidigital number, since it uses as much as digits as its factorization.

1226752001845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245350400374.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 1226752001845 in words is "one trillion, two hundred twenty-six billion, seven hundred fifty-two million, one thousand, eight hundred forty-five".