120654555961 has 4 divisors (see below), whose sum is σ = 120886139124. Its totient is φ = 120422972800.

The previous prime is 120654555947. The next prime is 120654555979. The reversal of 120654555961 is 169555456021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86998452025 + 33656103936 = 294955^2 + 183456^2 .

It is a cyclic number.

It is not a de Polignac number, because 120654555961 - 2⁹ = 120654555449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120654553961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115790800 + ... + 115791841.

It is an arithmetic number, because the mean of its divisors is an integer number (30221534781).

Almost surely, 2^120654555961 is an apocalyptic number.

It is an amenable number.

120654555961 is a deficient number, since it is larger than the sum of its proper divisors (231583163).

120654555961 is an equidigital number, since it uses as much as digits as its factorization.

120654555961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231583162.

The product of its (nonzero) digits is 1620000, while the sum is 49.

The spelling of 120654555961 in words is "one hundred twenty billion, six hundred fifty-four million, five hundred fifty-five thousand, nine hundred sixty-one".