64454645402 has 64 divisors (see below), whose sum is σ = 119429856000. Its totient is φ = 25470443520.

The previous prime is 64454645399. The next prime is 64454645407. The reversal of 64454645402 is 20454645446.

It is not an unprimeable number, because it can be changed into a prime (64454645407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4715474 + ... + 4729122.

It is an arithmetic number, because the mean of its divisors is an integer number (1866091500).

Almost surely, 2^64454645402 is an apocalyptic number.

64454645402 is a deficient number, since it is larger than the sum of its proper divisors (54975210598).

64454645402 is a wasteful number, since it uses less digits than its factorization.

64454645402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151.

The product of its (nonzero) digits is 1843200, while the sum is 44.

Adding to 64454645402 its sum of digits (44), we get a palindrome (64454645446).

The spelling of 64454645402 in words is "sixty-four billion, four hundred fifty-four million, six hundred forty-five thousand, four hundred two".