55015564660 has 24 divisors (see below), whose sum is σ = 132037355520. Its totient is φ = 18862479264.

The previous prime is 55015564651. The next prime is 55015564697. The reversal of 55015564660 is 6646551055.

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, 196484020 + ... + 196484299.

It is an arithmetic number, because the mean of its divisors is an integer number (5501556480).

Almost surely, 2^55015564660 is an apocalyptic number.

It is an amenable number.

55015564660 is an abundant number, since it is smaller than the sum of its proper divisors (77021790860).

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

55015564660 is a wasteful number, since it uses less digits than its factorization.

55015564660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392968335 (or 392968333 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 55015564660 in words is "fifty-five billion, fifteen million, five hundred sixty-four thousand, six hundred sixty".