64188268105507 has 16 divisors (see below), whose sum is σ = 80180063955712. Its totient is φ = 50028317206560.

The previous prime is 64188268105483. The next prime is 64188268105513. The reversal of 64188268105507 is 70550186288146.

It is not a de Polignac number, because 64188268105507 - 2⁴³ = 55392175083299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64188268105547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5263916169 + ... + 5263928362.

It is an arithmetic number, because the mean of its divisors is an integer number (5011253997232).

Almost surely, 2^{64188268105507} is an apocalyptic number.

64188268105507 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64188268105507 is a deficient number, since it is larger than the sum of its proper divisors (15991795850205).

64188268105507 is a wasteful number, since it uses less digits than its factorization.

64188268105507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10527844618.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 64188268105507 in words is "sixty-four trillion, one hundred eighty-eight billion, two hundred sixty-eight million, one hundred five thousand, five hundred seven".