64951032805 has 32 divisors (see below), whose sum is σ = 81585947520. Its totient is φ = 49594272000.

The previous prime is 64951032793. The next prime is 64951032859. The reversal of 64951032805 is 50823015946.

It is not a de Polignac number, because 64951032805 - 2¹³ = 64951024613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2848791 + ... + 2871499.

It is an arithmetic number, because the mean of its divisors is an integer number (2549560860).

Almost surely, 2^64951032805 is an apocalyptic number.

It is an amenable number.

64951032805 is a deficient number, since it is larger than the sum of its proper divisors (16634914715).

64951032805 is a wasteful number, since it uses less digits than its factorization.

64951032805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23061.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 64951032805 in words is "sixty-four billion, nine hundred fifty-one million, thirty-two thousand, eight hundred five".