1318939457472 has 896 divisors, whose sum is σ = 4958418124800. Its totient is φ = 336420864000.

The previous prime is 1318939457449. The next prime is 1318939457483. The reversal of 1318939457472 is 2747549398131.

1318939457472 is a `hidden beast` number, since 1 + 3 + 1 + 89 + 39 + 4 + 57 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 823821472 + ... + 823823072.

It is an arithmetic number, because the mean of its divisors is an integer number (5533948800).

Almost surely, 2^{1318939457472} is an apocalyptic number.

1318939457472 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 1318939457472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479209062400).

1318939457472 is an abundant number, since it is smaller than the sum of its proper divisors (3639478667328).

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

1318939457472 is a wasteful number, since it uses less digits than its factorization.

1318939457472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699 (or 1657 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 1318939457472 in words is "one trillion, three hundred eighteen billion, nine hundred thirty-nine million, four hundred fifty-seven thousand, four hundred seventy-two".