181378451048007 has 16 divisors (see below), whose sum is σ = 250177661498880. Its totient is φ = 116749120236000.

The previous prime is 181378451047991. The next prime is 181378451048021. The reversal of 181378451048007 is 700840154873181.

It is not a de Polignac number, because 181378451048007 - 2⁴ = 181378451047991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181378451048027) 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, 50670382 + ... + 54131732.

It is an arithmetic number, because the mean of its divisors is an integer number (15636103843680).

Almost surely, 2^{181378451048007} is an apocalyptic number.

181378451048007 is a deficient number, since it is larger than the sum of its proper divisors (68799210450873).

181378451048007 is a wasteful number, since it uses less digits than its factorization.

181378451048007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063694.

The product of its (nonzero) digits is 6021120, while the sum is 57.

The spelling of 181378451048007 in words is "one hundred eighty-one trillion, three hundred seventy-eight billion, four hundred fifty-one million, forty-eight thousand, seven".