10121516155 has 4 divisors (see below), whose sum is σ = 12145819392. Its totient is φ = 8097212920.

The previous prime is 10121516099. The next prime is 10121516161. The reversal of 10121516155 is 55161512101.

10121516155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10121516155 - 2²³ = 10113127547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012151611 + ... + 1012151620.

It is an arithmetic number, because the mean of its divisors is an integer number (3036454848).

Almost surely, 2^10121516155 is an apocalyptic number.

10121516155 is a deficient number, since it is larger than the sum of its proper divisors (2024303237).

10121516155 is an equidigital number, since it uses as much as digits as its factorization.

10121516155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024303236.

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

It can be divided in two parts, 101215 and 16155, that added together give a triangular number (117370 = T₄₈₄).

The spelling of 10121516155 in words is "ten billion, one hundred twenty-one million, five hundred sixteen thousand, one hundred fifty-five".