1306740245544 has 160 divisors (see below), whose sum is σ = 3695062609920. Its totient is φ = 431428685184.

The previous prime is 1306740245537. The next prime is 1306740245549. The reversal of 1306740245544 is 4455420476031.

1306740245544 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 74 + 0 + 24 + 554 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1306740245544.

It is not an unprimeable number, because it can be changed into a prime (1306740245549) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50434497 + ... + 50460399.

It is an arithmetic number, because the mean of its divisors is an integer number (23094141312).

Almost surely, 2^{1306740245544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1306740245544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847531304960).

1306740245544 is an abundant number, since it is smaller than the sum of its proper divisors (2388322364376).

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

1306740245544 is a wasteful number, since it uses less digits than its factorization.

1306740245544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26661 (or 26648 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 1306740245544 in words is "one trillion, three hundred six billion, seven hundred forty million, two hundred forty-five thousand, five hundred forty-four".