64551652291 has 8 divisors (see below), whose sum is σ = 75278895200. Its totient is φ = 55329987384.

The previous prime is 64551652273. The next prime is 64551652301. The reversal of 64551652291 is 19225615546.

It is not a de Polignac number, because 64551652291 - 2¹¹ = 64551650243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64551650291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94098276 + ... + 94098961.

It is an arithmetic number, because the mean of its divisors is an integer number (9409861900).

Almost surely, 2^64551652291 is an apocalyptic number.

64551652291 is a deficient number, since it is larger than the sum of its proper divisors (10727242909).

64551652291 is an equidigital number, since it uses as much as digits as its factorization.

64551652291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188197258 (or 188197244 counting only the distinct ones).

The product of its digits is 648000, while the sum is 46.

The spelling of 64551652291 in words is "sixty-four billion, five hundred fifty-one million, six hundred fifty-two thousand, two hundred ninety-one".