71561064103 has 8 divisors (see below), whose sum is σ = 75847637088. Its totient is φ = 67283057664.

The previous prime is 71561064059. The next prime is 71561064173. The reversal of 71561064103 is 30146016517.

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

It is a cyclic number.

It is not a de Polignac number, because 71561064103 - 2²¹ = 71558966951 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 (71561064173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124426 + ... + 2157847.

It is an arithmetic number, because the mean of its divisors is an integer number (9480954636).

Almost surely, 2^71561064103 is an apocalyptic number.

71561064103 is a deficient number, since it is larger than the sum of its proper divisors (4286572985).

71561064103 is a wasteful number, since it uses less digits than its factorization.

71561064103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283273.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 71561064103 in words is "seventy-one billion, five hundred sixty-one million, sixty-four thousand, one hundred three".