181420214078 has 8 divisors (see below), whose sum is σ = 278458933368. Its totient is φ = 88600569624.

The previous prime is 181420213967. The next prime is 181420214081. The reversal of 181420214078 is 870412024181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×181420214078² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1054768601 + ... + 1054768772.

It is an arithmetic number, because the mean of its divisors is an integer number (34807366671).

Almost surely, 2^181420214078 is an apocalyptic number.

181420214078 is a deficient number, since it is larger than the sum of its proper divisors (97038719290).

181420214078 is a wasteful number, since it uses less digits than its factorization.

181420214078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109537418.

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 181420214078 in words is "one hundred eighty-one billion, four hundred twenty million, two hundred fourteen thousand, seventy-eight".