643204151611115 has 8 divisors (see below), whose sum is σ = 783365056290960. Its totient is φ = 506883271717152.

The previous prime is 643204151611033. The next prime is 643204151611127. The reversal of 643204151611115 is 511116151402346.

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 643204151611115 - 2¹² = 643204151607019 is a prime.

It is a super-3 number, since 3×643204151611115³ (a number of 45 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960006196100 + ... + 960006196769.

It is an arithmetic number, because the mean of its divisors is an integer number (97920632036370).

Almost surely, 2^{643204151611115} is an apocalyptic number.

643204151611115 is a deficient number, since it is larger than the sum of its proper divisors (140160904679845).

643204151611115 is a wasteful number, since it uses less digits than its factorization.

643204151611115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920012392941.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 643204151611115 in words is "six hundred forty-three trillion, two hundred four billion, one hundred fifty-one million, six hundred eleven thousand, one hundred fifteen".