71861626047 has 4 divisors (see below), whose sum is σ = 95815501400. Its totient is φ = 47907750696.

The previous prime is 71861626043. The next prime is 71861626073. The reversal of 71861626047 is 74062616817.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71861626047 - 2² = 71861626043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71861625987 and 71861626005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71861626043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11976937672 + ... + 11976937677.

It is an arithmetic number, because the mean of its divisors is an integer number (23953875350).

Almost surely, 2^71861626047 is an apocalyptic number.

71861626047 is a deficient number, since it is larger than the sum of its proper divisors (23953875353).

71861626047 is a wasteful number, since it uses less digits than its factorization.

71861626047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23953875352.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 71861626047 in words is "seventy-one billion, eight hundred sixty-one million, six hundred twenty-six thousand, forty-seven".