71839253858855 has 16 divisors (see below), whose sum is σ = 98945248244544. Its totient is φ = 49049781169920.

The previous prime is 71839253858807. The next prime is 71839253858881. The reversal of 71839253858855 is 55885835293817.

It is not a de Polignac number, because 71839253858855 - 2²⁶ = 71839186749991 is a prime.

It is a super-2 number, since 2×71839253858855² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4404605816 + ... + 4404622125.

It is an arithmetic number, because the mean of its divisors is an integer number (6184078015284).

Almost surely, 2^{71839253858855} is an apocalyptic number.

71839253858855 is a deficient number, since it is larger than the sum of its proper divisors (27105994385689).

71839253858855 is a wasteful number, since it uses less digits than its factorization.

71839253858855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809228186.

The product of its digits is 2903040000, while the sum is 77.

The spelling of 71839253858855 in words is "seventy-one trillion, eight hundred thirty-nine billion, two hundred fifty-three million, eight hundred fifty-eight thousand, eight hundred fifty-five".