64247421903 has 8 divisors (see below), whose sum is σ = 97900833408. Its totient is φ = 36712812504.

The previous prime is 64247421863. The next prime is 64247421941. The reversal of 64247421903 is 30912474246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64247421903 - 2¹⁷ = 64247290831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64247425903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529700501 + ... + 1529700542.

It is an arithmetic number, because the mean of its divisors is an integer number (12237604176).

Almost surely, 2^64247421903 is an apocalyptic number.

64247421903 is a deficient number, since it is larger than the sum of its proper divisors (33653411505).

64247421903 is a wasteful number, since it uses less digits than its factorization.

64247421903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059401053.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 64247421903 in words is "sixty-four billion, two hundred forty-seven million, four hundred twenty-one thousand, nine hundred three".