18007740478407 has 32 divisors (see below), whose sum is σ = 26761213036800. Its totient is φ = 10704097893888.

The previous prime is 18007740478381. The next prime is 18007740478489. The reversal of 18007740478407 is 70487404770081.

It is not a de Polignac number, because 18007740478407 - 2¹¹ = 18007740476359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18007740478207) 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, 67443853 + ... + 67710329.

It is an arithmetic number, because the mean of its divisors is an integer number (836287907400).

Almost surely, 2^{18007740478407} is an apocalyptic number.

18007740478407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18007740478407 is a deficient number, since it is larger than the sum of its proper divisors (8753472558393).

18007740478407 is a wasteful number, since it uses less digits than its factorization.

18007740478407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336255.

The product of its (nonzero) digits is 9834496, while the sum is 57.

The spelling of 18007740478407 in words is "eighteen trillion, seven billion, seven hundred forty million, four hundred seventy-eight thousand, four hundred seven".