64535477396 has 24 divisors (see below), whose sum is σ = 121708401864. Its totient is φ = 29765070720.

The previous prime is 64535477389. The next prime is 64535477407. The reversal of 64535477396 is 69377453546.

64535477396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9350890000 + 55184587396 = 96700^2 + 234914^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351515 + ... + 502626.

It is an arithmetic number, because the mean of its divisors is an integer number (5071183411).

Almost surely, 2^64535477396 is an apocalyptic number.

It is an amenable number.

64535477396 is a deficient number, since it is larger than the sum of its proper divisors (57172924468).

64535477396 is a wasteful number, since it uses less digits than its factorization.

64535477396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855611 (or 855609 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 59.

The spelling of 64535477396 in words is "sixty-four billion, five hundred thirty-five million, four hundred seventy-seven thousand, three hundred ninety-six".