64661525022253 has 8 divisors (see below), whose sum is σ = 65138132561472. Its totient is φ = 64184984521056.

The previous prime is 64661525022239. The next prime is 64661525022257. The reversal of 64661525022253 is 35222052516646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64661525022253 - 2⁴¹ = 62462501766701 is a prime.

It is a super-2 number, since 2×64661525022253² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64661525022197 and 64661525022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64661525022257) 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, 14822475 + ... + 18682312.

It is an arithmetic number, because the mean of its divisors is an integer number (8142266570184).

Almost surely, 2^{64661525022253} is an apocalyptic number.

It is an amenable number.

64661525022253 is a deficient number, since it is larger than the sum of its proper divisors (476607539219).

64661525022253 is a wasteful number, since it uses less digits than its factorization.

64661525022253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33519011.

The product of its (nonzero) digits is 5184000, while the sum is 49.

Adding to 64661525022253 its reverse (35222052516646), we get a palindrome (99883577538899).

The spelling of 64661525022253 in words is "sixty-four trillion, six hundred sixty-one billion, five hundred twenty-five million, twenty-two thousand, two hundred fifty-three".