109215511602145 has 8 divisors (see below), whose sum is σ = 141140045762856. Its totient is φ = 80651454721536.

The previous prime is 109215511602101. The next prime is 109215511602149. The reversal of 109215511602145 is 541206115512901.

It can be written as a sum of positive squares in 4 ways, for example, as 730954891681 + 108484556710464 = 854959^2 + 10415592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109215511602145 - 2¹³ = 109215511593953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109215511602149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840119319952 + ... + 840119320081.

It is an arithmetic number, because the mean of its divisors is an integer number (17642505720357).

Almost surely, 2^{109215511602145} is an apocalyptic number.

It is an amenable number.

109215511602145 is a deficient number, since it is larger than the sum of its proper divisors (31924534160711).

109215511602145 is a wasteful number, since it uses less digits than its factorization.

109215511602145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680238640051.

The product of its (nonzero) digits is 108000, while the sum is 43.

The spelling of 109215511602145 in words is "one hundred nine trillion, two hundred fifteen billion, five hundred eleven million, six hundred two thousand, one hundred forty-five".