8334821651 has 4 divisors (see below), whose sum is σ = 8975961792. Its totient is φ = 7693681512.

The previous prime is 8334821639. The next prime is 8334821669. The reversal of 8334821651 is 1561284338.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8334821651 - 2⁶ = 8334821587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8334821599 and 8334821608.

It is not an unprimeable number, because it can be changed into a prime (8334821611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320570051 + ... + 320570076.

It is an arithmetic number, because the mean of its divisors is an integer number (2243990448).

Almost surely, 2^8334821651 is an apocalyptic number.

8334821651 is a deficient number, since it is larger than the sum of its proper divisors (641140141).

8334821651 is a wasteful number, since it uses less digits than its factorization.

8334821651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641140140.

The product of its digits is 138240, while the sum is 41.

The square root of 8334821651 is about 91295.2444051715. The cubic root of 8334821651 is about 2027.5213546555.

The spelling of 8334821651 in words is "eight billion, three hundred thirty-four million, eight hundred twenty-one thousand, six hundred fifty-one".