64146708142 has 16 divisors (see below), whose sum is σ = 105553756800. Its totient is φ = 28994701240.

The previous prime is 64146708121. The next prime is 64146708149. The reversal of 64146708142 is 24180764146.

It is a happy number.

It is a super-2 number, since 2×64146708142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64146708149) 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, 8140642 + ... + 8148517.

It is an arithmetic number, because the mean of its divisors is an integer number (6597109800).

Almost surely, 2^64146708142 is an apocalyptic number.

64146708142 is a deficient number, since it is larger than the sum of its proper divisors (41407048658).

64146708142 is a wasteful number, since it uses less digits than its factorization.

64146708142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289351.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 64146708142 in words is "sixty-four billion, one hundred forty-six million, seven hundred eight thousand, one hundred forty-two".