806849651553 has 64 divisors (see below), whose sum is σ = 1248975396864. Its totient is φ = 457890048000.

The previous prime is 806849651551. The next prime is 806849651579. The reversal of 806849651553 is 355156948608.

It is not a de Polignac number, because 806849651553 - 2¹ = 806849651551 is a prime.

It is a super-2 number, since 2×806849651553² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (806849651551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 302076408 + ... + 302079078.

It is an arithmetic number, because the mean of its divisors is an integer number (19515240576).

Almost surely, 2^806849651553 is an apocalyptic number.

It is an amenable number.

806849651553 is a deficient number, since it is larger than the sum of its proper divisors (442125745311).

806849651553 is a wasteful number, since it uses less digits than its factorization.

806849651553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246.

The product of its (nonzero) digits is 31104000, while the sum is 60.

The spelling of 806849651553 in words is "eight hundred six billion, eight hundred forty-nine million, six hundred fifty-one thousand, five hundred fifty-three".