64142219481 has 8 divisors (see below), whose sum is σ = 85628676960. Its totient is φ = 42708620832.

The previous prime is 64142219467. The next prime is 64142219483. The reversal of 64142219481 is 18491224146.

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

It is not a de Polignac number, because 64142219481 - 2⁶ = 64142219417 is a prime.

It is a super-2 number, since 2×64142219481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64142219483) 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, 13211875 + ... + 13216728.

It is an arithmetic number, because the mean of its divisors is an integer number (10703584620).

Almost surely, 2^64142219481 is an apocalyptic number.

It is an amenable number.

64142219481 is a deficient number, since it is larger than the sum of its proper divisors (21486457479).

64142219481 is a wasteful number, since it uses less digits than its factorization.

64142219481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26429415.

The product of its digits is 110592, while the sum is 42.

The spelling of 64142219481 in words is "sixty-four billion, one hundred forty-two million, two hundred nineteen thousand, four hundred eighty-one".