120804612691 has 20 divisors (see below), whose sum is σ = 142223576000. Its totient is φ = 102596617872.

The previous prime is 120804612667. The next prime is 120804612701. The reversal of 120804612691 is 196216408021.

It is not a de Polignac number, because 120804612691 - 2³¹ = 118657129043 is a prime.

It is a super-2 number, since 2×120804612691² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120804612601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30910 + ... + 492508.

It is an arithmetic number, because the mean of its divisors is an integer number (7111178800).

Almost surely, 2^120804612691 is an apocalyptic number.

120804612691 is a deficient number, since it is larger than the sum of its proper divisors (21418963309).

120804612691 is an frugal number, since it uses more digits than its factorization.

120804612691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461736 (or 461715 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 120804612691 in words is "one hundred twenty billion, eight hundred four million, six hundred twelve thousand, six hundred ninety-one".