655515884090 has 32 divisors (see below), whose sum is σ = 1207614230784. Its totient is φ = 256077885760.

The previous prime is 655515884047. The next prime is 655515884167. The reversal of 655515884090 is 90488515556.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273781 + ... + 1712760.

It is an arithmetic number, because the mean of its divisors is an integer number (37737944712).

Almost surely, 2^655515884090 is an apocalyptic number.

655515884090 is a deficient number, since it is larger than the sum of its proper divisors (552098346694).

655515884090 is a wasteful number, since it uses less digits than its factorization.

655515884090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987062.

The product of its (nonzero) digits is 8640000, while the sum is 56.

The spelling of 655515884090 in words is "six hundred fifty-five billion, five hundred fifteen million, eight hundred eighty-four thousand, ninety".