120261564371 has 4 divisors (see below), whose sum is σ = 129512453952. Its totient is φ = 111010674792.

The previous prime is 120261564347. The next prime is 120261564389. The reversal of 120261564371 is 173465162021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173465162021 = 317 ⋅547208713.

It is a cyclic number.

It is not a de Polignac number, because 120261564371 - 2³⁴ = 103081695187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120261564671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625444771 + ... + 4625444796.

It is an arithmetic number, because the mean of its divisors is an integer number (32378113488).

Almost surely, 2^120261564371 is an apocalyptic number.

120261564371 is a deficient number, since it is larger than the sum of its proper divisors (9250889581).

120261564371 is an equidigital number, since it uses as much as digits as its factorization.

120261564371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250889580.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 120261564371 in words is "one hundred twenty billion, two hundred sixty-one million, five hundred sixty-four thousand, three hundred seventy-one".