6615656656151 has 8 divisors (see below), whose sum is σ = 6715072736064. Its totient is φ = 6516905567200.

The previous prime is 6615656656121. The next prime is 6615656656171. The reversal of 6615656656151 is 1516566565166.

It is a happy number.

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 6615656656151 - 2³⁰ = 6614582914327 is a prime.

It is a super-2 number, since 2×6615656656151² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615656656121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166227695 + ... + 166267488.

It is an arithmetic number, because the mean of its divisors is an integer number (839384092008).

Almost surely, 2^{6615656656151} is an apocalyptic number.

6615656656151 is a deficient number, since it is larger than the sum of its proper divisors (99416079913).

6615656656151 is a wasteful number, since it uses less digits than its factorization.

6615656656151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332495481.

The product of its digits is 29160000, while the sum is 59.

The spelling of 6615656656151 in words is "six trillion, six hundred fifteen billion, six hundred fifty-six million, six hundred fifty-six thousand, one hundred fifty-one".