64563474554 has 16 divisors (see below), whose sum is σ = 97700548200. Its totient is φ = 31997631744.

The previous prime is 64563474551. The next prime is 64563474559. The reversal of 64563474554 is 45547436546.

It can be written as a sum of positive squares in 4 ways, for example, as 47421595225 + 17141879329 = 217765^2 + 130927^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64563474496 and 64563474505.

It is not an unprimeable number, because it can be changed into a prime (64563474551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122939 + ... + 379790.

Almost surely, 2^64563474554 is an apocalyptic number.

64563474554 is a deficient number, since it is larger than the sum of its proper divisors (33137073646).

64563474554 is a wasteful number, since it uses less digits than its factorization.

64563474554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503297.

The product of its digits is 24192000, while the sum is 53.

The spelling of 64563474554 in words is "sixty-four billion, five hundred sixty-three million, four hundred seventy-four thousand, five hundred fifty-four".