18947055374711 has 8 divisors (see below), whose sum is σ = 19600563066480. Its totient is φ = 18293558413312.

The previous prime is 18947055374671. The next prime is 18947055374759. The reversal of 18947055374711 is 11747355074981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18947055374711 - 2³⁰ = 18945981632887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18947055374311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995276 + ... + 6235758.

It is an arithmetic number, because the mean of its divisors is an integer number (2450070383310).

Almost surely, 2^{18947055374711} is an apocalyptic number.

18947055374711 is a deficient number, since it is larger than the sum of its proper divisors (653507691769).

18947055374711 is a wasteful number, since it uses less digits than its factorization.

18947055374711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365185.

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 18947055374711 in words is "eighteen trillion, nine hundred forty-seven billion, fifty-five million, three hundred seventy-four thousand, seven hundred eleven".