2155316650 has 12 divisors (see below), whose sum is σ = 4008889062. Its totient is φ = 862126640.

The previous prime is 2155316641. The next prime is 2155316671. The reversal of 2155316650 is 566135512.

It can be written as a sum of positive squares in 3 ways, for example, as 1509089409 + 646227241 = 38847^2 + 25421^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21553117 + ... + 21553216.

Almost surely, 2^2155316650 is an apocalyptic number.

2155316650 is a deficient number, since it is larger than the sum of its proper divisors (1853572412).

2155316650 is a wasteful number, since it uses less digits than its factorization.

2155316650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43106345 (or 43106340 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 2155316650 is about 46425.3879897627. The cubic root of 2155316650 is about 1291.7258813413.

The spelling of 2155316650 in words is "two billion, one hundred fifty-five million, three hundred sixteen thousand, six hundred fifty".