641066510150651 has 4 divisors (see below), whose sum is σ = 690379318623792. Its totient is φ = 591753701677512.

The previous prime is 641066510150641. The next prime is 641066510150653. The reversal of 641066510150651 is 156051015660146.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641066510150651 is a prime.

It is a super-3 number, since 3×641066510150651³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641066510150596 and 641066510150605.

It is not an unprimeable number, because it can be changed into a prime (641066510150653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24656404236551 + ... + 24656404236576.

It is an arithmetic number, because the mean of its divisors is an integer number (172594829655948).

Almost surely, 2^{641066510150651} is an apocalyptic number.

641066510150651 is a deficient number, since it is larger than the sum of its proper divisors (49312808473141).

641066510150651 is a wasteful number, since it uses less digits than its factorization.

641066510150651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49312808473140.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 641066510150651 in words is "six hundred forty-one trillion, sixty-six billion, five hundred ten million, one hundred fifty thousand, six hundred fifty-one".