64996456403 has 4 divisors (see below), whose sum is σ = 65003904360. Its totient is φ = 64989008448.

The previous prime is 64996456397. The next prime is 64996456429. The reversal of 64996456403 is 30465469946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64996456403 - 2⁶ = 64996456339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64996486403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710873 + ... + 3728346.

It is an arithmetic number, because the mean of its divisors is an integer number (16250976090).

Almost surely, 2^64996456403 is an apocalyptic number.

64996456403 is a deficient number, since it is larger than the sum of its proper divisors (7447957).

64996456403 is an equidigital number, since it uses as much as digits as its factorization.

64996456403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447956.

The product of its (nonzero) digits is 16796160, while the sum is 56.

The spelling of 64996456403 in words is "sixty-four billion, nine hundred ninety-six million, four hundred fifty-six thousand, four hundred three".