1560867926409 has 135 divisors (see below), whose sum is σ = 2653320137377. Its totient is φ = 883538198400.

The previous prime is 1560867926399. The next prime is 1560867926419. The reversal of 1560867926409 is 9046297680651.

The square root of 1560867926409 is 1249347.

It is a perfect power (a square), and thus also a powerful number.

1560867926409 is a `hidden beast` number, since 1 + 5 + 60 + 86 + 7 + 92 + 6 + 409 = 666.

It is an interprime number because it is at equal distance from previous prime (1560867926399) and next prime (1560867926419).

It can be written as a sum of positive squares in 2 ways, for example, as 484420176009 + 1076447750400 = 696003^2 + 1037520^2 .

It is not a de Polignac number, because 1560867926409 - 2¹⁹ = 1560867402121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1560867926419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 11915022274 + ... + 11915022404.

Almost surely, 2^{1560867926409} is an apocalyptic number.

1560867926409 is the 1249347-th square number.

1560867926409 is the 624674-th centered octagonal number.

It is an amenable number.

1560867926409 is a deficient number, since it is larger than the sum of its proper divisors (1092452210968).

1560867926409 is an frugal number, since it uses more digits than its factorization.

1560867926409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 1560867926409 in words is "one trillion, five hundred sixty billion, eight hundred sixty-seven million, nine hundred twenty-six thousand, four hundred nine".