64651210522 has 4 divisors (see below), whose sum is σ = 96976815786. Its totient is φ = 32325605260.

The previous prime is 64651210433. The next prime is 64651210549. The reversal of 64651210522 is 22501215646.

64651210522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 34025860521 + 30625350001 = 184461^2 + 175001^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16162802629 + ... + 16162802632.

Almost surely, 2^64651210522 is an apocalyptic number.

64651210522 is a deficient number, since it is larger than the sum of its proper divisors (32325605264).

64651210522 is a wasteful number, since it uses less digits than its factorization.

64651210522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32325605263.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 64651210522 in words is "sixty-four billion, six hundred fifty-one million, two hundred ten thousand, five hundred twenty-two".