64505621470 has 8 divisors (see below), whose sum is σ = 116110118664. Its totient is φ = 25802248584.

The previous prime is 64505621461. The next prime is 64505621483. The reversal of 64505621470 is 7412650546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3225281064 + ... + 3225281083.

It is an arithmetic number, because the mean of its divisors is an integer number (14513764833).

Almost surely, 2^64505621470 is an apocalyptic number.

64505621470 is a deficient number, since it is larger than the sum of its proper divisors (51604497194).

64505621470 is a wasteful number, since it uses less digits than its factorization.

64505621470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450562154.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 64505621470 in words is "sixty-four billion, five hundred five million, six hundred twenty-one thousand, four hundred seventy".