71820730354 has 8 divisors (see below), whose sum is σ = 107734339548. Its totient is φ = 35909283840.

The previous prime is 71820730337. The next prime is 71820730381. The reversal of 71820730354 is 45303702817.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69866648329 + 1954082025 = 264323^2 + 44205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×71820730354³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454927 + ... + 592114.

Almost surely, 2^71820730354 is an apocalyptic number.

71820730354 is a deficient number, since it is larger than the sum of its proper divisors (35913609194).

71820730354 is a wasteful number, since it uses less digits than its factorization.

71820730354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081340.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 71820730354 in words is "seventy-one billion, eight hundred twenty million, seven hundred thirty thousand, three hundred fifty-four".