2015011151665 has 16 divisors (see below), whose sum is σ = 2614722861312. Its totient is φ = 1484904335104.

The previous prime is 2015011151641. The next prime is 2015011151677. The reversal of 2015011151665 is 5661511105102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015011151665 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2015011151665.

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, 252187639 + ... + 252195628.

It is an arithmetic number, because the mean of its divisors is an integer number (163420178832).

Almost surely, 2^{2015011151665} is an apocalyptic number.

It is an amenable number.

2015011151665 is a deficient number, since it is larger than the sum of its proper divisors (599711709647).

2015011151665 is a wasteful number, since it uses less digits than its factorization.

2015011151665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504383336.

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 2015011151665 its reverse (5661511105102), we get a palindrome (7676522256767).

The spelling of 2015011151665 in words is "two trillion, fifteen billion, eleven million, one hundred fifty-one thousand, six hundred sixty-five".