64811812307 has 16 divisors (see below), whose sum is σ = 72723032448. Its totient is φ = 57251335680.

The previous prime is 64811812297. The next prime is 64811812321. The reversal of 64811812307 is 70321811846.

It is not a de Polignac number, because 64811812307 - 2⁶ = 64811812243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64811812327) 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, 263693 + ... + 446270.

It is an arithmetic number, because the mean of its divisors is an integer number (4545189528).

Almost surely, 2^64811812307 is an apocalyptic number.

64811812307 is a deficient number, since it is larger than the sum of its proper divisors (7911220141).

64811812307 is a wasteful number, since it uses less digits than its factorization.

64811812307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710210.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 64811812307 in words is "sixty-four billion, eight hundred eleven million, eight hundred twelve thousand, three hundred seven".