71349821147 has 16 divisors (see below), whose sum is σ = 80498534400. Its totient is φ = 62679776640.

The previous prime is 71349821141. The next prime is 71349821149. The reversal of 71349821147 is 74112894317.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71349821147 - 2¹⁶ = 71349755611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71349821141) 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, 832622 + ... + 914307.

It is an arithmetic number, because the mean of its divisors is an integer number (5031158400).

Almost surely, 2^71349821147 is an apocalyptic number.

71349821147 is a deficient number, since it is larger than the sum of its proper divisors (9148713253).

71349821147 is a wasteful number, since it uses less digits than its factorization.

71349821147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747066.

The product of its digits is 338688, while the sum is 47.

The spelling of 71349821147 in words is "seventy-one billion, three hundred forty-nine million, eight hundred twenty-one thousand, one hundred forty-seven".