7321271153 has 12 divisors (see below), whose sum is σ = 9017557092. Its totient is φ = 5906234880.

The previous prime is 7321271137. The next prime is 7321271171. The reversal of 7321271153 is 3511721237.

It can be written as a sum of positive squares in 2 ways, for example, as 3560270224 + 3761000929 = 59668^2 + 61327^2 .

It is not a de Polignac number, because 7321271153 - 2⁴ = 7321271137 is a prime.

It is a super-2 number, since 2×7321271153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7324271153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4393688 + ... + 4395353.

It is an arithmetic number, because the mean of its divisors is an integer number (751463091).

Almost surely, 2^7321271153 is an apocalyptic number.

It is an amenable number.

7321271153 is a deficient number, since it is larger than the sum of its proper divisors (1696285939).

7321271153 is a wasteful number, since it uses less digits than its factorization.

7321271153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789072 (or 8789065 counting only the distinct ones).

The product of its digits is 8820, while the sum is 32.

The square root of 7321271153 is about 85564.4269132915. The cubic root of 7321271153 is about 1941.7597623186.

The spelling of 7321271153 in words is "seven billion, three hundred twenty-one million, two hundred seventy-one thousand, one hundred fifty-three".