1318747446432 has 504 divisors, whose sum is σ = 4242470196384. Its totient is φ = 403137326592.

The previous prime is 1318747446409. The next prime is 1318747446473. The reversal of 1318747446432 is 2346447478131.

1318747446432 is a `hidden beast` number, since 1 + 3 + 1 + 87 + 4 + 74 + 464 + 32 = 666.

It is a super-4 number, since 4×1318747446432⁴ (a number of 50 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 658385143 + ... + 658387145.

It is an arithmetic number, because the mean of its divisors is an integer number (8417599596).

Almost surely, 2^{1318747446432} is an apocalyptic number.

1318747446432 is a gapful number since it is divisible by the number (12) 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 1318747446432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121235098192).

1318747446432 is an abundant number, since it is smaller than the sum of its proper divisors (2923722749952).

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

1318747446432 is a wasteful number, since it uses less digits than its factorization.

1318747446432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224 (or 2188 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 54.

The spelling of 1318747446432 in words is "one trillion, three hundred eighteen billion, seven hundred forty-seven million, four hundred forty-six thousand, four hundred thirty-two".