64747026243 has 10 divisors (see below), whose sum is σ = 96720866484. Its totient is φ = 43164684108.

The previous prime is 64747026221. The next prime is 64747026293. The reversal of 64747026243 is 34262074746.

It is not a de Polignac number, because 64747026243 - 2⁹ = 64747025731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64747026293) 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 9 ways as a sum of consecutive naturals, for example, 399672921 + ... + 399673082.

Almost surely, 2^64747026243 is an apocalyptic number.

64747026243 is a deficient number, since it is larger than the sum of its proper divisors (31973840241).

64747026243 is an equidigital number, since it uses as much as digits as its factorization.

64747026243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799346015 (or 799346006 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 45.

The spelling of 64747026243 in words is "sixty-four billion, seven hundred forty-seven million, twenty-six thousand, two hundred forty-three".