64120200645 has 8 divisors (see below), whose sum is σ = 102592321056. Its totient is φ = 34197440336.

The previous prime is 64120200637. The next prime is 64120200647. The reversal of 64120200645 is 54600202146.

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 64120200645 - 2³ = 64120200637 is a prime.

It is a super-4 number, since 4×64120200645⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64120200647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137340007 + ... + 2137340036.

It is an arithmetic number, because the mean of its divisors is an integer number (12824040132).

Almost surely, 2^64120200645 is an apocalyptic number.

It is an amenable number.

64120200645 is a deficient number, since it is larger than the sum of its proper divisors (38472120411).

64120200645 is a wasteful number, since it uses less digits than its factorization.

64120200645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274680051.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 64120200645 in words is "sixty-four billion, one hundred twenty million, two hundred thousand, six hundred forty-five".