18157436269040 has 20 divisors (see below), whose sum is σ = 42216039325704. Its totient is φ = 7262974507584.

The previous prime is 18157436269039. The next prime is 18157436269043. The reversal of 18157436269040 is 4096263475181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18157436269043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113483976602 + ... + 113483976761.

It is a 1-persistent number, because it is pandigital, but 2⋅18157436269040 = 36314872538080 is not.

Almost surely, 2^{18157436269040} is an apocalyptic number.

18157436269040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18157436269040 is an abundant number, since it is smaller than the sum of its proper divisors (24058603056664).

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

18157436269040 is a wasteful number, since it uses less digits than its factorization.

18157436269040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226967953376 (or 226967953370 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 18157436269040 in words is "eighteen trillion, one hundred fifty-seven billion, four hundred thirty-six million, two hundred sixty-nine thousand, forty".