64117212471 has 32 divisors (see below), whose sum is σ = 102558456000. Its totient is φ = 39355231104.

The previous prime is 64117212443. The next prime is 64117212473. The reversal of 64117212471 is 17421271146.

64117212471 is a `hidden beast` number, since 6 + 4 + 1 + 172 + 12 + 471 = 666.

It is not a de Polignac number, because 64117212471 - 2⁶ = 64117212407 is a prime.

It is a super-3 number, since 3×64117212471³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64117212473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98256 + ... + 371333.

It is an arithmetic number, because the mean of its divisors is an integer number (3204951750).

Almost surely, 2^64117212471 is an apocalyptic number.

64117212471 is a deficient number, since it is larger than the sum of its proper divisors (38441243529).

64117212471 is a wasteful number, since it uses less digits than its factorization.

64117212471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470000 (or 469994 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The spelling of 64117212471 in words is "sixty-four billion, one hundred seventeen million, two hundred twelve thousand, four hundred seventy-one".