1518031361497 has 32 divisors (see below), whose sum is σ = 1848130560000. Its totient is φ = 1221422275584.

The previous prime is 1518031361477. The next prime is 1518031361503. The reversal of 1518031361497 is 7941631308151.

It is a happy number.

It is not a de Polignac number, because 1518031361497 - 2¹⁵ = 1518031328729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1518031361497.

It is not an unprimeable number, because it can be changed into a prime (1518031361467) 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, 13114129 + ... + 13229377.

It is an arithmetic number, because the mean of its divisors is an integer number (57754080000).

Almost surely, 2^{1518031361497} is an apocalyptic number.

1518031361497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1518031361497 is a deficient number, since it is larger than the sum of its proper divisors (330099198503).

1518031361497 is an equidigital number, since it uses as much as digits as its factorization.

1518031361497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115690 (or 115656 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 1518031361497 in words is "one trillion, five hundred eighteen billion, thirty-one million, three hundred sixty-one thousand, four hundred ninety-seven".