120561115510 has 16 divisors (see below), whose sum is σ = 236738190672. Its totient is φ = 43840405600.

The previous prime is 120561115489. The next prime is 120561115517. The reversal of 120561115510 is 15511165021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120561115517) 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 7 ways as a sum of consecutive naturals, for example, 548004961 + ... + 548005180.

It is an arithmetic number, because the mean of its divisors is an integer number (14796136917).

Almost surely, 2^120561115510 is an apocalyptic number.

120561115510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120561115510 is a deficient number, since it is larger than the sum of its proper divisors (116177075162).

120561115510 is a wasteful number, since it uses less digits than its factorization.

120561115510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096010159.

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 120561115510 in words is "one hundred twenty billion, five hundred sixty-one million, one hundred fifteen thousand, five hundred ten".