2506204901218 has 4 divisors (see below), whose sum is σ = 3759307351830. Its totient is φ = 1253102450608.

The previous prime is 2506204901141. The next prime is 2506204901243. The reversal of 2506204901218 is 8121094026052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1580458808569 + 925746092649 = 1257163^2 + 962157^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 626551225303 + ... + 626551225306.

Almost surely, 2^{2506204901218} is an apocalyptic number.

2506204901218 is a deficient number, since it is larger than the sum of its proper divisors (1253102450612).

2506204901218 is a wasteful number, since it uses less digits than its factorization.

2506204901218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253102450611.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 2506204901218 in words is "two trillion, five hundred six billion, two hundred four million, nine hundred one thousand, two hundred eighteen".