7840297071 has 24 divisors (see below), whose sum is σ = 11756209920. Its totient is φ = 5221570392.

The previous prime is 7840297043. The next prime is 7840297111. The reversal of 7840297071 is 1707920487.

It is a happy number.

It is not a de Polignac number, because 7840297071 - 2¹⁷ = 7840165999 is a prime.

It is a super-2 number, since 2×7840297071² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840297021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231786 + ... + 263448.

It is an arithmetic number, because the mean of its divisors is an integer number (489842080).

Almost surely, 2^7840297071 is an apocalyptic number.

7840297071 is a deficient number, since it is larger than the sum of its proper divisors (3915912849).

7840297071 is a wasteful number, since it uses less digits than its factorization.

7840297071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32697 (or 32685 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 7840297071 is about 88545.4520063001. The cubic root of 7840297071 is about 1986.6018680381.

The spelling of 7840297071 in words is "seven billion, eight hundred forty million, two hundred ninety-seven thousand, seventy-one".