1518131363472 has 100 divisors (see below), whose sum is σ = 4416217479036. Its totient is φ = 503474952960.

The previous prime is 1518131363293. The next prime is 1518131363473. The reversal of 1518131363472 is 2743631318151.

1518131363472 is a `hidden beast` number, since 1 + 5 + 1 + 8 + 1 + 3 + 1 + 3 + 634 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 953974144656 + 564157218816 = 976716^2 + 751104^2 .

It is not an unprimeable number, because it can be changed into a prime (1518131363473) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2717779 + ... + 3228402.

Almost surely, 2^{1518131363472} is an apocalyptic number.

1518131363472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1518131363472 is an abundant number, since it is smaller than the sum of its proper divisors (2898086115564).

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

1518131363472 is a wasteful number, since it uses less digits than its factorization.

1518131363472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946398 (or 5946383 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 1518131363472 in words is "one trillion, five hundred eighteen billion, one hundred thirty-one million, three hundred sixty-three thousand, four hundred seventy-two".