120412153515553 has 4 divisors (see below), whose sum is σ = 120421700198548. Its totient is φ = 120402606832560.

The previous prime is 120412153515481. The next prime is 120412153515581. The reversal of 120412153515553 is 355515351214021.

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 96744200954769 + 23667952560784 = 9835863^2 + 4864972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120412153515553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120412153515253) 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, 4773322578 + ... + 4773347803.

It is an arithmetic number, because the mean of its divisors is an integer number (30105425049637).

Almost surely, 2^{120412153515553} is an apocalyptic number.

It is an amenable number.

120412153515553 is a deficient number, since it is larger than the sum of its proper divisors (9546682995).

120412153515553 is an equidigital number, since it uses as much as digits as its factorization.

120412153515553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546682994.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 120412153515553 in words is "one hundred twenty trillion, four hundred twelve billion, one hundred fifty-three million, five hundred fifteen thousand, five hundred fifty-three".