2012454251818 has 8 divisors (see below), whose sum is σ = 3035359175940. Its totient is φ = 1000667859840.

The previous prime is 2012454251809. The next prime is 2012454251851. The reversal of 2012454251818 is 8181524542102.

It can be written as a sum of positive squares in 2 ways, for example, as 1931563497249 + 80890754569 = 1389807^2 + 284413^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779632583 + ... + 2779633306.

Almost surely, 2^{2012454251818} is an apocalyptic number.

2012454251818 is a deficient number, since it is larger than the sum of its proper divisors (1022904924122).

2012454251818 is a wasteful number, since it uses less digits than its factorization.

2012454251818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559266072.

The product of its (nonzero) digits is 204800, while the sum is 43.

The spelling of 2012454251818 in words is "two trillion, twelve billion, four hundred fifty-four million, two hundred fifty-one thousand, eight hundred eighteen".