71621606626 has 8 divisors (see below), whose sum is σ = 110335988700. Its totient is φ = 34842943728.

The previous prime is 71621606599. The next prime is 71621606659. The reversal of 71621606626 is 62660612617.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57353065225 + 14268541401 = 239485^2 + 119451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483929701 + ... + 483929848.

Almost surely, 2^71621606626 is an apocalyptic number.

71621606626 is a deficient number, since it is larger than the sum of its proper divisors (38714382074).

71621606626 is a wasteful number, since it uses less digits than its factorization.

71621606626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967859588.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 71621606626 in words is "seventy-one billion, six hundred twenty-one million, six hundred six thousand, six hundred twenty-six".