64525041864406 has 16 divisors (see below), whose sum is σ = 97032548291616. Its totient is φ = 32180861091456.

The previous prime is 64525041864397. The next prime is 64525041864421. The reversal of 64525041864406 is 60446814052546.

It is a happy number.

It is a super-3 number, since 3×64525041864406³ (a number of 42 digits) contains 333 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, 70822350 + ... + 71727646.

It is an arithmetic number, because the mean of its divisors is an integer number (6064534268226).

Almost surely, 2^{64525041864406} is an apocalyptic number.

64525041864406 is a deficient number, since it is larger than the sum of its proper divisors (32507506427210).

64525041864406 is a wasteful number, since it uses less digits than its factorization.

64525041864406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995463.

The product of its (nonzero) digits is 22118400, while the sum is 55.

The spelling of 64525041864406 in words is "sixty-four trillion, five hundred twenty-five billion, forty-one million, eight hundred sixty-four thousand, four hundred six".