120054040135681 has 4 divisors (see below), whose sum is σ = 120054862778032. Its totient is φ = 120053217493332.

The previous prime is 120054040135663. The next prime is 120054040135721. The reversal of 120054040135681 is 186531040450021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120054040135681 - 2¹⁹ = 120054039611393 is a prime.

It is a super-2 number, since 2×120054040135681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120054040135651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411102231 + ... + 411394156.

It is an arithmetic number, because the mean of its divisors is an integer number (30013715694508).

Almost surely, 2^{120054040135681} is an apocalyptic number.

It is an amenable number.

120054040135681 is a deficient number, since it is larger than the sum of its proper divisors (822642351).

120054040135681 is an equidigital number, since it uses as much as digits as its factorization.

120054040135681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822642350.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 120054040135681 in words is "one hundred twenty trillion, fifty-four billion, forty million, one hundred thirty-five thousand, six hundred eighty-one".