18473870777109 has 32 divisors (see below), whose sum is σ = 27119346967680. Its totient is φ = 11092855910400.

The previous prime is 18473870777071. The next prime is 18473870777143. The reversal of 18473870777109 is 90177707837481.

It is not a de Polignac number, because 18473870777109 - 2³² = 18469575809813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473870777179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58895529 + ... + 59208369.

It is an arithmetic number, because the mean of its divisors is an integer number (847479592740).

Almost surely, 2^{18473870777109} is an apocalyptic number.

It is an amenable number.

18473870777109 is a deficient number, since it is larger than the sum of its proper divisors (8645476190571).

18473870777109 is a wasteful number, since it uses less digits than its factorization.

18473870777109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329381.

The product of its (nonzero) digits is 116169984, while the sum is 69.

The spelling of 18473870777109 in words is "eighteen trillion, four hundred seventy-three billion, eight hundred seventy million, seven hundred seventy-seven thousand, one hundred nine".