809140700053505 has 32 divisors (see below), whose sum is σ = 1022972663558400. Its totient is φ = 612703414847232.

The previous prime is 809140700053339. The next prime is 809140700053541. The reversal of 809140700053505 is 505350007041908.

It is a Cunningham number, because it is equal to 93184³+1.

It is a cyclic number.

It is not a de Polignac number, because 809140700053505 - 2³² = 809136405086209 is a prime.

It is a super-2 number, since 2×809140700053505² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 809140700053505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2147446316 + ... + 2147823074.

It is an arithmetic number, because the mean of its divisors is an integer number (31967895736200).

It is a Proth number, since it is equal to 753571 ⋅ 2³⁰ + 1 and 753571 < 2³⁰.

Almost surely, 2^{809140700053505} is an apocalyptic number.

It is an amenable number.

809140700053505 is a deficient number, since it is larger than the sum of its proper divisors (213831963504895).

809140700053505 is a wasteful number, since it uses less digits than its factorization.

809140700053505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396633.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 809140700053505 in words is "eight hundred nine trillion, one hundred forty billion, seven hundred million, fifty-three thousand, five hundred five".