71438201613 has 16 divisors (see below), whose sum is σ = 105908803840. Its totient is φ = 47591973792.

The previous prime is 71438201603. The next prime is 71438201617. The reversal of 71438201613 is 31610283417.

It is a happy number.

71438201613 is a `hidden beast` number, since 7 + 1 + 4 + 38 + 2 + 0 + 1 + 613 = 666.

It is not a de Polignac number, because 71438201613 - 2⁵ = 71438201581 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 (71438201617) 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, 891256 + ... + 968097.

It is an arithmetic number, because the mean of its divisors is an integer number (6619300240).

Almost surely, 2^71438201613 is an apocalyptic number.

It is an amenable number.

71438201613 is a deficient number, since it is larger than the sum of its proper divisors (34470602227).

71438201613 is a wasteful number, since it uses less digits than its factorization.

71438201613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860785 (or 1860779 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 71438201613 in words is "seventy-one billion, four hundred thirty-eight million, two hundred one thousand, six hundred thirteen".