2118651851554 has 8 divisors (see below), whose sum is σ = 3631974602688. Its totient is φ = 907993650660.

The previous prime is 2118651851549. The next prime is 2118651851579. The reversal of 2118651851554 is 4551581568112.

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

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 in 3 ways as a sum of consecutive naturals, for example, 75666137542 + ... + 75666137569.

It is an arithmetic number, because the mean of its divisors is an integer number (453996825336).

Almost surely, 2^{2118651851554} is an apocalyptic number.

2118651851554 is a deficient number, since it is larger than the sum of its proper divisors (1513322751134).

2118651851554 is a wasteful number, since it uses less digits than its factorization.

2118651851554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151332275120.

The product of its digits is 1920000, while the sum is 52.

The spelling of 2118651851554 in words is "two trillion, one hundred eighteen billion, six hundred fifty-one million, eight hundred fifty-one thousand, five hundred fifty-four".