71018734063 has 4 divisors (see below), whose sum is σ = 72222441480. Its totient is φ = 69815026648.

The previous prime is 71018734057. The next prime is 71018734093. The reversal of 71018734063 is 36043781017.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71018734063 is a prime.

It is a super-2 number, since 2×71018734063² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71018734093) 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, 601853620 + ... + 601853737.

It is an arithmetic number, because the mean of its divisors is an integer number (18055610370).

Almost surely, 2^71018734063 is an apocalyptic number.

71018734063 is a deficient number, since it is larger than the sum of its proper divisors (1203707417).

71018734063 is a wasteful number, since it uses less digits than its factorization.

71018734063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203707416.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 71018734063 in words is "seventy-one billion, eighteen million, seven hundred thirty-four thousand, sixty-three".