2897121052818 has 40 divisors (see below), whose sum is σ = 6492298496112. Its totient is φ = 965617564824.

The previous prime is 2897121052817. The next prime is 2897121052883. The reversal of 2897121052818 is 8182501217982.

It is a happy number.

2897121052818 is a `hidden beast` number, since 2 + 8 + 97 + 1 + 2 + 10 + 528 + 18 = 666.

It is a super-2 number, since 2×2897121052818² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2897121052817) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 937621 + ... + 2583287.

Almost surely, 2^{2897121052818} is an apocalyptic number.

2897121052818 is an abundant number, since it is smaller than the sum of its proper divisors (3595177443294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2897121052818 is a wasteful number, since it uses less digits than its factorization.

2897121052818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656548 (or 1656539 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 54.

The spelling of 2897121052818 in words is "two trillion, eight hundred ninety-seven billion, one hundred twenty-one million, fifty-two thousand, eight hundred eighteen".