64514147780109 has 32 divisors (see below), whose sum is σ = 93669459235200. Its totient is φ = 39340328590080.

The previous prime is 64514147780107. The next prime is 64514147780171. The reversal of 64514147780109 is 90108774141546.

It is not a de Polignac number, because 64514147780109 - 2¹ = 64514147780107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64514147780107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231249187 + ... + 231527999.

It is an arithmetic number, because the mean of its divisors is an integer number (2927170601100).

Almost surely, 2^{64514147780109} is an apocalyptic number.

It is an amenable number.

64514147780109 is a deficient number, since it is larger than the sum of its proper divisors (29155311455091).

64514147780109 is a wasteful number, since it uses less digits than its factorization.

64514147780109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418845.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 64514147780109 in words is "sixty-four trillion, five hundred fourteen billion, one hundred forty-seven million, seven hundred eighty thousand, one hundred nine".