71401896139 has 16 divisors (see below), whose sum is σ = 82795032576. Its totient is φ = 60307884000.

The previous prime is 71401896133. The next prime is 71401896169. The reversal of 71401896139 is 93169810417.

It is a de Polignac number, because none of the positive numbers 2^k-71401896139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71401896092 and 71401896101.

It is not an unprimeable number, because it can be changed into a prime (71401896133) 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, 932829 + ... + 1006465.

It is an arithmetic number, because the mean of its divisors is an integer number (5174689536).

Almost surely, 2^71401896139 is an apocalyptic number.

71401896139 is a deficient number, since it is larger than the sum of its proper divisors (11393136437).

71401896139 is a wasteful number, since it uses less digits than its factorization.

71401896139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75666.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 71401896139 in words is "seventy-one billion, four hundred one million, eight hundred ninety-six thousand, one hundred thirty-nine".