216600155553 has 16 divisors (see below), whose sum is σ = 304047008000. Its totient is φ = 136779042960.

The previous prime is 216600155503. The next prime is 216600155567. The reversal of 216600155553 is 355551006612.

It is not a de Polignac number, because 216600155553 - 2¹⁸ = 216599893409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216600155503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85398 + ... + 663696.

It is an arithmetic number, because the mean of its divisors is an integer number (19002938000).

Almost surely, 2^216600155553 is an apocalyptic number.

It is an amenable number.

216600155553 is a deficient number, since it is larger than the sum of its proper divisors (87446852447).

216600155553 is a wasteful number, since it uses less digits than its factorization.

216600155553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584892.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 216600155553 in words is "two hundred sixteen billion, six hundred million, one hundred fifty-five thousand, five hundred fifty-three".