1326510052551 has 12 divisors (see below), whose sum is σ = 1918173348000. Its totient is φ = 883369294080.

The previous prime is 1326510052541. The next prime is 1326510052573. The reversal of 1326510052551 is 1552500156231.

1326510052551 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 51 + 0 + 0 + 52 + 551 = 666.

It is not a de Polignac number, because 1326510052551 - 2⁶ = 1326510052487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326510052531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80886426 + ... + 80902823.

It is an arithmetic number, because the mean of its divisors is an integer number (159847779000).

Almost surely, 2^{1326510052551} is an apocalyptic number.

1326510052551 is a deficient number, since it is larger than the sum of its proper divisors (591663295449).

1326510052551 is a wasteful number, since it uses less digits than its factorization.

1326510052551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161790166 (or 161790163 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 1326510052551 in words is "one trillion, three hundred twenty-six billion, five hundred ten million, fifty-two thousand, five hundred fifty-one".