120181011987 has 8 divisors (see below), whose sum is σ = 161503092736. Its totient is φ = 79489802952.

The previous prime is 120181011971. The next prime is 120181011991. The reversal of 120181011987 is 789110181021.

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

It is not a de Polignac number, because 120181011987 - 2⁴ = 120181011971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120181011997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157717483 + ... + 157718244.

It is an arithmetic number, because the mean of its divisors is an integer number (20187886592).

Almost surely, 2^120181011987 is an apocalyptic number.

120181011987 is a deficient number, since it is larger than the sum of its proper divisors (41322080749).

120181011987 is a wasteful number, since it uses less digits than its factorization.

120181011987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315435857.

The product of its (nonzero) digits is 8064, while the sum is 39.

The spelling of 120181011987 in words is "one hundred twenty billion, one hundred eighty-one million, eleven thousand, nine hundred eighty-seven".