120006539261 has 4 divisors (see below), whose sum is σ = 137150330592. Its totient is φ = 102862747932.

The previous prime is 120006539197. The next prime is 120006539273. The reversal of 120006539261 is 162935600021.

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 not a de Polignac number, because 120006539261 - 2⁶ = 120006539197 is a prime.

It is a super-2 number, since 2×120006539261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120006530261) 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, 8571895655 + ... + 8571895668.

It is an arithmetic number, because the mean of its divisors is an integer number (34287582648).

Almost surely, 2^120006539261 is an apocalyptic number.

It is an amenable number.

120006539261 is a deficient number, since it is larger than the sum of its proper divisors (17143791331).

120006539261 is an equidigital number, since it uses as much as digits as its factorization.

120006539261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143791330.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 120006539261 in words is "one hundred twenty billion, six million, five hundred thirty-nine thousand, two hundred sixty-one".