6626051621611 has 4 divisors (see below), whose sum is σ = 6643534607800. Its totient is φ = 6608568635424.

The previous prime is 6626051621593. The next prime is 6626051621621. The reversal of 6626051621611 is 1161261506266.

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

It is a cyclic number.

It is not a de Polignac number, because 6626051621611 - 2¹¹ = 6626051619563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6626051621621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8741492526 + ... + 8741493283.

It is an arithmetic number, because the mean of its divisors is an integer number (1660883651950).

Almost surely, 2^{6626051621611} is an apocalyptic number.

6626051621611 is a deficient number, since it is larger than the sum of its proper divisors (17482986189).

6626051621611 is a wasteful number, since it uses less digits than its factorization.

6626051621611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17482986188.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 6626051621611 in words is "six trillion, six hundred twenty-six billion, fifty-one million, six hundred twenty-one thousand, six hundred eleven".