120662665131 has 4 divisors (see below), whose sum is σ = 160883553512. Its totient is φ = 80441776752.

The previous prime is 120662665129. The next prime is 120662665141. The reversal of 120662665131 is 131566266021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120662665131 - 2¹ = 120662665129 is a prime.

It is a super-2 number, since 2×120662665131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120662665131.

It is not an unprimeable number, because it can be changed into a prime (120662665111) 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, 20110444186 + ... + 20110444191.

It is an arithmetic number, because the mean of its divisors is an integer number (40220888378).

Almost surely, 2^120662665131 is an apocalyptic number.

120662665131 is a deficient number, since it is larger than the sum of its proper divisors (40220888381).

120662665131 is an equidigital number, since it uses as much as digits as its factorization.

120662665131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40220888380.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 120662665131 in words is "one hundred twenty billion, six hundred sixty-two million, six hundred sixty-five thousand, one hundred thirty-one".