1297427068530 has 160 divisors (see below), whose sum is σ = 3557116134000. Its totient is φ = 339199031808.

The previous prime is 1297427068519. The next prime is 1297427068537. The reversal of 1297427068530 is 358607247921.

It is a happy number.

1297427068530 is a `hidden beast` number, since 1 + 2 + 9 + 7 + 42 + 7 + 0 + 68 + 530 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 140978471841 + 1156448596689 = 375471^2 + 1075383^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1297427068537) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 61336396 + ... + 61357544.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1297427068530 = 2594854137060, but 3⋅1297427068530 = 3892281205590 is not.

Almost surely, 2^{1297427068530} is an apocalyptic number.

1297427068530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297427068530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778558067000).

1297427068530 is an abundant number, since it is smaller than the sum of its proper divisors (2259689065470).

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

1297427068530 is a wasteful number, since it uses less digits than its factorization.

1297427068530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22650 (or 22641 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 1297427068530 in words is "one trillion, two hundred ninety-seven billion, four hundred twenty-seven million, sixty-eight thousand, five hundred thirty".