120561506187 has 8 divisors (see below), whose sum is σ = 161677858704. Its totient is φ = 79909745568.

The previous prime is 120561506167. The next prime is 120561506249. The reversal of 120561506187 is 781605165021.

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

It is not a de Polignac number, because 120561506187 - 2⁷ = 120561506059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120561506167) 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, 116147368 + ... + 116148405.

It is an arithmetic number, because the mean of its divisors is an integer number (20209732338).

Almost surely, 2^120561506187 is an apocalyptic number.

120561506187 is a deficient number, since it is larger than the sum of its proper divisors (41116352517).

120561506187 is a wasteful number, since it uses less digits than its factorization.

120561506187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232295949.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 120561506187 in words is "one hundred twenty billion, five hundred sixty-one million, five hundred six thousand, one hundred eighty-seven".