64501156743745 has 16 divisors (see below), whose sum is σ = 81475378467840. Its totient is φ = 48884947352064.

The previous prime is 64501156743743. The next prime is 64501156743757. The reversal of 64501156743745 is 54734765110546.

It is a cyclic number.

It is not a de Polignac number, because 64501156743745 - 2¹ = 64501156743743 is a prime.

It is a super-2 number, since 2×64501156743745² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64501156743745.

It is not an unprimeable number, because it can be changed into a prime (64501156743743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42677664 + ... + 44163166.

It is an arithmetic number, because the mean of its divisors is an integer number (5092211154240).

Almost surely, 2^{64501156743745} is an apocalyptic number.

It is an amenable number.

64501156743745 is a deficient number, since it is larger than the sum of its proper divisors (16974221724095).

64501156743745 is a wasteful number, since it uses less digits than its factorization.

64501156743745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942584.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 64501156743745 in words is "sixty-four trillion, five hundred one billion, one hundred fifty-six million, seven hundred forty-three thousand, seven hundred forty-five".