65551010556 has 24 divisors (see below), whose sum is σ = 154052738560. Its totient is φ = 21693139632.

The previous prime is 65551010527. The next prime is 65551010563. The reversal of 65551010556 is 65501015556.

65551010556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19647916 + ... + 19651251.

Almost surely, 2^65551010556 is an apocalyptic number.

It is an amenable number.

65551010556 is an abundant number, since it is smaller than the sum of its proper divisors (88501728004).

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

65551010556 is a wasteful number, since it uses less digits than its factorization.

65551010556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39299313 (or 39299311 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

Subtracting from 65551010556 its reverse (65501015556), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 65551010556 in words is "sixty-five billion, five hundred fifty-one million, ten thousand, five hundred fifty-six".