7820822145 has 8 divisors (see below), whose sum is σ = 12513315456. Its totient is φ = 4171105136.

The previous prime is 7820822143. The next prime is 7820822153. The reversal of 7820822145 is 5412280287.

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 7820822145 - 2¹ = 7820822143 is a prime.

It is a super-2 number, since 2×7820822145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7820822143) 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, 260694057 + ... + 260694086.

It is an arithmetic number, because the mean of its divisors is an integer number (1564164432).

Almost surely, 2^7820822145 is an apocalyptic number.

It is an amenable number.

7820822145 is a deficient number, since it is larger than the sum of its proper divisors (4692493311).

7820822145 is a wasteful number, since it uses less digits than its factorization.

7820822145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521388151.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 7820822145 is about 88435.4122792448. The cubic root of 7820822145 is about 1984.9556292916.

The spelling of 7820822145 in words is "seven billion, eight hundred twenty million, eight hundred twenty-two thousand, one hundred forty-five".