5651665655550 has 48 divisors (see below), whose sum is σ = 14087278771632. Its totient is φ = 1499460524800.

The previous prime is 5651665655543. The next prime is 5651665655609. The reversal of 5651665655550 is 555565661565.

It is a happy number.

It is a super-2 number, since 2×5651665655550² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95599311 + ... + 95658410.

It is an arithmetic number, because the mean of its divisors is an integer number (293484974409).

Almost surely, 2^{5651665655550} is an apocalyptic number.

5651665655550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5651665655550 is an abundant number, since it is smaller than the sum of its proper divisors (8435613116082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5651665655550 is a wasteful number, since it uses less digits than its factorization.

5651665655550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191257933 (or 191257928 counting only the distinct ones).

The product of its (nonzero) digits is 101250000, while the sum is 60.

The spelling of 5651665655550 in words is "five trillion, six hundred fifty-one billion, six hundred sixty-five million, six hundred fifty-five thousand, five hundred fifty".