2151408406918 has 16 divisors (see below), whose sum is σ = 3272672176416. Its totient is φ = 1060518674880.

The previous prime is 2151408406867. The next prime is 2151408406937. The reversal of 2151408406918 is 8196048041512.

It is a congruent 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 in 7 ways as a sum of consecutive naturals, for example, 4404730 + ... + 4868722.

It is an arithmetic number, because the mean of its divisors is an integer number (204542011026).

Almost surely, 2^{2151408406918} is an apocalyptic number.

2151408406918 is a deficient number, since it is larger than the sum of its proper divisors (1121263769498).

2151408406918 is a wasteful number, since it uses less digits than its factorization.

2151408406918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496719.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 2151408406918 in words is "two trillion, one hundred fifty-one billion, four hundred eight million, four hundred six thousand, nine hundred eighteen".