64306538906380 has 24 divisors (see below), whose sum is σ = 135044433624240. Its totient is φ = 25722481863360.

The previous prime is 64306538906371. The next prime is 64306538906399. The reversal of 64306538906380 is 8360983560346.

It is a super-2 number, since 2×64306538906380² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4365691 + ... + 12152050.

It is an arithmetic number, because the mean of its divisors is an integer number (5626851401010).

Almost surely, 2^{64306538906380} is an apocalyptic number.

It is an amenable number.

64306538906380 is an abundant number, since it is smaller than the sum of its proper divisors (70737894717860).

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

64306538906380 is a wasteful number, since it uses less digits than its factorization.

64306538906380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16712409 (or 16712407 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 61.

The spelling of 64306538906380 in words is "sixty-four trillion, three hundred six billion, five hundred thirty-eight million, nine hundred six thousand, three hundred eighty".