18151755296493 has 64 divisors (see below), whose sum is σ = 30026250125312. Its totient is φ = 9497830970880.

The previous prime is 18151755296491. The next prime is 18151755296551. The reversal of 18151755296493 is 39469255715181.

It is not a de Polignac number, because 18151755296493 - 2¹ = 18151755296491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18151755296491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 277716705 + ... + 277782057.

It is an arithmetic number, because the mean of its divisors is an integer number (469160158208).

Almost surely, 2^{18151755296493} is an apocalyptic number.

18151755296493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18151755296493 is a deficient number, since it is larger than the sum of its proper divisors (11874494828819).

18151755296493 is a wasteful number, since it uses less digits than its factorization.

18151755296493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73514.

The product of its digits is 81648000, while the sum is 66.

The spelling of 18151755296493 in words is "eighteen trillion, one hundred fifty-one billion, seven hundred fifty-five million, two hundred ninety-six thousand, four hundred ninety-three".