1297260840451 has 8 divisors (see below), whose sum is σ = 1433290749984. Its totient is φ = 1167866536320.

The previous prime is 1297260840433. The next prime is 1297260840511. The reversal of 1297260840451 is 1540480627921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1297260840451 - 2²¹ = 1297258743299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1297260840395 and 1297260840404.

It is not an unprimeable number, because it can be changed into a prime (1297260840401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1658900940 + ... + 1658901721.

It is an arithmetic number, because the mean of its divisors is an integer number (179161343748).

Almost surely, 2^{1297260840451} is an apocalyptic number.

1297260840451 is a deficient number, since it is larger than the sum of its proper divisors (136029909533).

1297260840451 is a wasteful number, since it uses less digits than its factorization.

1297260840451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317802701.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 1297260840451 in words is "one trillion, two hundred ninety-seven billion, two hundred sixty million, eight hundred forty thousand, four hundred fifty-one".