6551621624155 has 48 divisors (see below), whose sum is σ = 8497008013824. Its totient is φ = 4846233188160.

The previous prime is 6551621624081. The next prime is 6551621624167. The reversal of 6551621624155 is 5514261261556.

It is not a de Polignac number, because 6551621624155 - 2⁷ = 6551621624027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6551621624099 and 6551621624108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102963300 + ... + 103026910.

It is an arithmetic number, because the mean of its divisors is an integer number (177021000288).

Almost surely, 2^{6551621624155} is an apocalyptic number.

6551621624155 is a deficient number, since it is larger than the sum of its proper divisors (1945386389669).

6551621624155 is a wasteful number, since it uses less digits than its factorization.

6551621624155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65024 (or 65005 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 49.

The spelling of 6551621624155 in words is "six trillion, five hundred fifty-one billion, six hundred twenty-one million, six hundred twenty-four thousand, one hundred fifty-five".