64146043336340 has 48 divisors (see below), whose sum is σ = 153991812076032. Its totient is φ = 21987027991296.

The previous prime is 64146043336301. The next prime is 64146043336381. The reversal of 64146043336340 is 4363334064146.

It is a super-2 number, since 2×64146043336340² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60946697 + ... + 61990256.

It is an arithmetic number, because the mean of its divisors is an integer number (3208162751584).

Almost surely, 2^{64146043336340} is an apocalyptic number.

It is an amenable number.

64146043336340 is an abundant number, since it is smaller than the sum of its proper divisors (89845768739692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64146043336340 is a wasteful number, since it uses less digits than its factorization.

64146043336340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122940696 (or 122940694 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 47.

The spelling of 64146043336340 in words is "sixty-four trillion, one hundred forty-six billion, forty-three million, three hundred thirty-six thousand, three hundred forty".