201516254123145 has 16 divisors (see below), whose sum is σ = 347228007104832. Its totient is φ = 99208002029760.

The previous prime is 201516254123089. The next prime is 201516254123153. The reversal of 201516254123145 is 541321452615102.

201516254123145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201516254123145 - 2⁷ = 201516254123017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201516254123097 and 201516254123106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516708343711 + ... + 516708344100.

It is an arithmetic number, because the mean of its divisors is an integer number (21701750444052).

Almost surely, 2^{201516254123145} is an apocalyptic number.

It is an amenable number.

201516254123145 is a deficient number, since it is larger than the sum of its proper divisors (145711752981687).

201516254123145 is a wasteful number, since it uses less digits than its factorization.

201516254123145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033416687832.

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 201516254123145 in words is "two hundred one trillion, five hundred sixteen billion, two hundred fifty-four million, one hundred twenty-three thousand, one hundred forty-five".