64405513045 has 8 divisors (see below), whose sum is σ = 79779732480. Its totient is φ = 49862332560.

The previous prime is 64405513043. The next prime is 64405513097. The reversal of 64405513045 is 54031550446.

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

It is not a de Polignac number, because 64405513045 - 2¹ = 64405513043 is a prime.

It is a super-2 number, since 2×64405513045² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64405512995 and 64405513013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64405513043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207759565 + ... + 207759874.

It is an arithmetic number, because the mean of its divisors is an integer number (9972466560).

Almost surely, 2^64405513045 is an apocalyptic number.

It is an amenable number.

64405513045 is a deficient number, since it is larger than the sum of its proper divisors (15374219435).

64405513045 is a wasteful number, since it uses less digits than its factorization.

64405513045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415519475.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 64405513045 in words is "sixty-four billion, four hundred five million, five hundred thirteen thousand, forty-five".