120706171505 has 32 divisors (see below), whose sum is σ = 156037570560. Its totient is φ = 89350672320.

The previous prime is 120706171457. The next prime is 120706171507. The reversal of 120706171505 is 505171607021.

It is not a de Polignac number, because 120706171505 - 2¹² = 120706167409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120706171507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2146700 + ... + 2202210.

It is an arithmetic number, because the mean of its divisors is an integer number (4876174080).

Almost surely, 2^120706171505 is an apocalyptic number.

It is an amenable number.

120706171505 is a deficient number, since it is larger than the sum of its proper divisors (35331399055).

120706171505 is a wasteful number, since it uses less digits than its factorization.

120706171505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56069.

The product of its (nonzero) digits is 14700, while the sum is 35.

Adding to 120706171505 its reverse (505171607021), we get a palindrome (625877778526).

The spelling of 120706171505 in words is "one hundred twenty billion, seven hundred six million, one hundred seventy-one thousand, five hundred five".