71507005657066 has 32 divisors (see below), whose sum is σ = 125594142216192. Its totient is φ = 29897376765360.

The previous prime is 71507005656991. The next prime is 71507005657067. The reversal of 71507005657066 is 66075650070517.

It is a happy number.

It is a super-2 number, since 2×71507005657066² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71507005656998 and 71507005657016.

It is not an unprimeable number, because it can be changed into a prime (71507005657067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174511216 + ... + 174920491.

It is an arithmetic number, because the mean of its divisors is an integer number (3924816944256).

Almost surely, 2^{71507005657066} is an apocalyptic number.

71507005657066 is a deficient number, since it is larger than the sum of its proper divisors (54087136559126).

71507005657066 is a wasteful number, since it uses less digits than its factorization.

71507005657066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349432074.

The product of its (nonzero) digits is 9261000, while the sum is 55.

The spelling of 71507005657066 in words is "seventy-one trillion, five hundred seven billion, five million, six hundred fifty-seven thousand, sixty-six".