64108888690431 has 8 divisors (see below), whose sum is σ = 92053788888880. Its totient is φ = 39451623809472.

The previous prime is 64108888690409. The next prime is 64108888690439. The reversal of 64108888690431 is 13409688880146.

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

It is not a de Polignac number, because 64108888690431 - 2⁶ = 64108888690367 is a prime.

It is a super-2 number, since 2×64108888690431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64108888690439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821908829326 + ... + 821908829403.

It is an arithmetic number, because the mean of its divisors is an integer number (11506723611110).

Almost surely, 2^{64108888690431} is an apocalyptic number.

64108888690431 is a deficient number, since it is larger than the sum of its proper divisors (27944900198449).

64108888690431 is a wasteful number, since it uses less digits than its factorization.

64108888690431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643817658745.

The product of its (nonzero) digits is 63700992, while the sum is 66.

The spelling of 64108888690431 in words is "sixty-four trillion, one hundred eight billion, eight hundred eighty-eight million, six hundred ninety thousand, four hundred thirty-one".