18714951024640 has 144 divisors (see below), whose sum is σ = 48370787840088. Its totient is φ = 6910132617216.

The previous prime is 18714951024589. The next prime is 18714951024643. The reversal of 18714951024640 is 4642015941781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9910105473024 + 8804845551616 = 3148032^2 + 2967296^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (18714951024643) 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, 7421344 + ... + 9618016.

Almost surely, 2^{18714951024640} is an apocalyptic number.

18714951024640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18714951024640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24185393920044).

18714951024640 is an abundant number, since it is smaller than the sum of its proper divisors (29655836815448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18714951024640 is an frugal number, since it uses more digits than its factorization.

18714951024640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196725 (or 2196693 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 18714951024640 in words is "eighteen trillion, seven hundred fourteen billion, nine hundred fifty-one million, twenty-four thousand, six hundred forty".