4521655993 has 2 divisors, whose sum is σ = 4521655994. Its totient is φ = 4521655992.

The previous prime is 4521655981. The next prime is 4521656011. The reversal of 4521655993 is 3995561254.

4521655993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3113305209 + 1408350784 = 55797^2 + 37528^2 .

It is a cyclic number.

It is not a de Polignac number, because 4521655993 - 2²⁵ = 4488101561 is a prime.

It is not a weakly prime, because it can be changed into another prime (4521655933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260827996 + 2260827997.

It is an arithmetic number, because the mean of its divisors is an integer number (2260827997).

Almost surely, 2^4521655993 is an apocalyptic number.

It is an amenable number.

4521655993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4521655993 is an equidigital number, since it uses as much as digits as its factorization.

4521655993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 49.

The square root of 4521655993 is about 67243.2598332353. The cubic root of 4521655993 is about 1653.6077767467.

The spelling of 4521655993 in words is "four billion, five hundred twenty-one million, six hundred fifty-five thousand, nine hundred ninety-three".