71842338494 has 32 divisors (see below), whose sum is σ = 112437979104. Its totient is φ = 34399572480.

The previous prime is 71842338409. The next prime is 71842338497. The reversal of 71842338494 is 49483324817.

It is a happy number.

It is a super-2 number, since 2×71842338494² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71842338497) 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, 1620122 + ... + 1663874.

It is an arithmetic number, because the mean of its divisors is an integer number (3513686847).

Almost surely, 2^71842338494 is an apocalyptic number.

71842338494 is a deficient number, since it is larger than the sum of its proper divisors (40595640610).

71842338494 is a wasteful number, since it uses less digits than its factorization.

71842338494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44172.

The product of its digits is 4644864, while the sum is 53.

The spelling of 71842338494 in words is "seventy-one billion, eight hundred forty-two million, three hundred thirty-eight thousand, four hundred ninety-four".