1181801001451 has 16 divisors (see below), whose sum is σ = 1410058865664. Its totient is φ = 968444557344.

The previous prime is 1181801001421. The next prime is 1181801001457. The reversal of 1181801001451 is 1541001081811.

It is a cyclic number.

It is not a de Polignac number, because 1181801001451 - 2¹¹ = 1181800999403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1181801001457) 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 15 ways as a sum of consecutive naturals, for example, 1516335 + ... + 2159368.

It is an arithmetic number, because the mean of its divisors is an integer number (88128679104).

Almost surely, 2^{1181801001451} is an apocalyptic number.

1181801001451 is a deficient number, since it is larger than the sum of its proper divisors (228257864213).

1181801001451 is a wasteful number, since it uses less digits than its factorization.

1181801001451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677730.

The product of its (nonzero) digits is 1280, while the sum is 31.

The spelling of 1181801001451 in words is "one trillion, one hundred eighty-one billion, eight hundred one million, one thousand, four hundred fifty-one".