1331275730607 has 28 divisors (see below), whose sum is σ = 1996961942544. Its totient is φ = 887089656960.

The previous prime is 1331275730597. The next prime is 1331275730621. The reversal of 1331275730607 is 7060375721331.

1331275730607 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 2 + 7 + 5 + 7 + 30 + 607 = 666.

It is not a de Polignac number, because 1331275730607 - 2¹⁹ = 1331275206319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331275730657) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1078278 + ... + 1955820.

Almost surely, 2^{1331275730607} is an apocalyptic number.

1331275730607 is a deficient number, since it is larger than the sum of its proper divisors (665686211937).

1331275730607 is an frugal number, since it uses more digits than its factorization.

1331275730607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879642 (or 879627 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 45.

The spelling of 1331275730607 in words is "one trillion, three hundred thirty-one billion, two hundred seventy-five million, seven hundred thirty thousand, six hundred seven".