1233957351845 has 16 divisors (see below), whose sum is σ = 1496788020720. Its totient is φ = 976507413504.

The previous prime is 1233957351841. The next prime is 1233957351859. The reversal of 1233957351845 is 5481537593321.

It can be written as a sum of positive squares in 8 ways, for example, as 14712962209 + 1219244389636 = 121297^2 + 1104194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233957351845 - 2² = 1233957351841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233957351841) 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 15 ways as a sum of consecutive naturals, for example, 1857794 + ... + 2432963.

It is an arithmetic number, because the mean of its divisors is an integer number (93549251295).

Almost surely, 2^{1233957351845} is an apocalyptic number.

It is an amenable number.

1233957351845 is a deficient number, since it is larger than the sum of its proper divisors (262830668875).

1233957351845 is a wasteful number, since it uses less digits than its factorization.

1233957351845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291384.

The product of its digits is 13608000, while the sum is 56.

The spelling of 1233957351845 in words is "one trillion, two hundred thirty-three billion, nine hundred fifty-seven million, three hundred fifty-one thousand, eight hundred forty-five".