64556627260145 has 16 divisors (see below), whose sum is σ = 77584973658192. Its totient is φ = 51567341168640.

The previous prime is 64556627260067. The next prime is 64556627260157. The reversal of 64556627260145 is 54106272665546.

It can be written as a sum of positive squares in 8 ways, for example, as 1075188569569 + 63481438690576 = 1036913^2 + 7967524^2 .

It is not a de Polignac number, because 64556627260145 - 2²² = 64556623065841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6358025 + ... + 13020665.

It is an arithmetic number, because the mean of its divisors is an integer number (4849060853637).

Almost surely, 2^{64556627260145} is an apocalyptic number.

It is an amenable number.

64556627260145 is a deficient number, since it is larger than the sum of its proper divisors (13028346398047).

64556627260145 is a wasteful number, since it uses less digits than its factorization.

64556627260145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665572.

The product of its (nonzero) digits is 72576000, while the sum is 59.

The spelling of 64556627260145 in words is "sixty-four trillion, five hundred fifty-six billion, six hundred twenty-seven million, two hundred sixty thousand, one hundred forty-five".