71057047655 has 16 divisors (see below), whose sum is σ = 93049246368. Its totient is φ = 51661680000.

The previous prime is 71057047631. The next prime is 71057047657. The reversal of 71057047655 is 55674075017.

It is not a de Polignac number, because 71057047655 - 2⁶ = 71057047591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71057047657) 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, 23396 + ... + 377705.

It is an arithmetic number, because the mean of its divisors is an integer number (5815577898).

Almost surely, 2^71057047655 is an apocalyptic number.

71057047655 is a deficient number, since it is larger than the sum of its proper divisors (21992198713).

71057047655 is a wasteful number, since it uses less digits than its factorization.

71057047655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404338.

The product of its (nonzero) digits is 1029000, while the sum is 47.

The spelling of 71057047655 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, six hundred fifty-five".