6651155506611 has 64 divisors (see below), whose sum is σ = 11142011805696. Its totient is φ = 3428463456000.

The previous prime is 6651155506573. The next prime is 6651155506627. The reversal of 6651155506611 is 1166055511566.

It is not a de Polignac number, because 6651155506611 - 2⁷ = 6651155506483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6651155506111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31531951 + ... + 31742183.

It is an arithmetic number, because the mean of its divisors is an integer number (174093934464).

Almost surely, 2^{6651155506611} is an apocalyptic number.

6651155506611 is a deficient number, since it is larger than the sum of its proper divisors (4490856299085).

6651155506611 is a wasteful number, since it uses less digits than its factorization.

6651155506611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211312.

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 6651155506611 in words is "six trillion, six hundred fifty-one billion, one hundred fifty-five million, five hundred six thousand, six hundred eleven".