64015020003 has 16 divisors (see below), whose sum is σ = 93199910400. Its totient is φ = 38760667680.

The previous prime is 64015019927. The next prime is 64015020019. The reversal of 64015020003 is 30002051046.

It is a happy number.

It is not a de Polignac number, because 64015020003 - 2²² = 64010825699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64015020023) 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, 872043 + ... + 942596.

It is an arithmetic number, because the mean of its divisors is an integer number (5824994400).

Almost surely, 2^64015020003 is an apocalyptic number.

64015020003 is a deficient number, since it is larger than the sum of its proper divisors (29184890397).

64015020003 is a wasteful number, since it uses less digits than its factorization.

64015020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815722.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 64015020003 its reverse (30002051046), we get a palindrome (94017071049).

The spelling of 64015020003 in words is "sixty-four billion, fifteen million, twenty thousand, three".