2815149689857 has 8 divisors (see below), whose sum is σ = 2885406336000. Its totient is φ = 2745644451984.

The previous prime is 2815149689789. The next prime is 2815149689887. The reversal of 2815149689857 is 7589869415182.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2815149689857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2815149689857.

It is not an unprimeable number, because it can be changed into a prime (2815149689887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187844482 + ... + 187859467.

It is an arithmetic number, because the mean of its divisors is an integer number (360675792000).

Almost surely, 2^{2815149689857} is an apocalyptic number.

It is an amenable number.

2815149689857 is a deficient number, since it is larger than the sum of its proper divisors (70256646143).

2815149689857 is a wasteful number, since it uses less digits than its factorization.

2815149689857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375704135.

The product of its digits is 348364800, while the sum is 73.

The spelling of 2815149689857 in words is "two trillion, eight hundred fifteen billion, one hundred forty-nine million, six hundred eighty-nine thousand, eight hundred fifty-seven".