71570005533 has 36 divisors (see below), whose sum is σ = 116809965792. Its totient is φ = 42128143200.

The previous prime is 71570005489. The next prime is 71570005571. The reversal of 71570005533 is 33550007517.

It is a happy number.

71570005533 is a `hidden beast` number, since 7 + 1 + 570 + 0 + 0 + 55 + 33 = 666.

It is not a de Polignac number, because 71570005533 - 2¹⁶ = 71569939997 is a prime.

It is a super-2 number, since 2×71570005533² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71570205533) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 987943 + ... + 1057908.

It is an arithmetic number, because the mean of its divisors is an integer number (3244721272).

Almost surely, 2^71570005533 is an apocalyptic number.

It is an amenable number.

71570005533 is a deficient number, since it is larger than the sum of its proper divisors (45239960259).

71570005533 is a wasteful number, since it uses less digits than its factorization.

71570005533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045906 (or 2045890 counting only the distinct ones).

The product of its (nonzero) digits is 55125, while the sum is 36.

The spelling of 71570005533 in words is "seventy-one billion, five hundred seventy million, five thousand, five hundred thirty-three".