64145604533016 has 32 divisors (see below), whose sum is σ = 160364208211200. Its totient is φ = 21381841927200.

The previous prime is 64145604532993. The next prime is 64145604533053. The reversal of 64145604533016 is 61033540654146.

It is a happy number.

It is a super-2 number, since 2×64145604533016² (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 7 ways as a sum of consecutive naturals, for example, 35176941 + ... + 36955491.

It is an arithmetic number, because the mean of its divisors is an integer number (5011381506600).

Almost surely, 2^{64145604533016} is an apocalyptic number.

It is an amenable number.

64145604533016 is an abundant number, since it is smaller than the sum of its proper divisors (96218603678184).

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

64145604533016 is a wasteful number, since it uses less digits than its factorization.

64145604533016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281319 (or 3281315 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 64145604533016 in words is "sixty-four trillion, one hundred forty-five billion, six hundred four million, five hundred thirty-three thousand, sixteen".