4181470481521 has 2 divisors, whose sum is σ = 4181470481522. Its totient is φ = 4181470481520.

The previous prime is 4181470481483. The next prime is 4181470481533. The reversal of 4181470481521 is 1251840741814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4181468778496 + 1703025 = 2044864^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4181470481521 - 2¹³ = 4181470473329 is a prime.

It is not a weakly prime, because it can be changed into another prime (4181470481561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090735240760 + 2090735240761.

It is an arithmetic number, because the mean of its divisors is an integer number (2090735240761).

Almost surely, 2^{4181470481521} is an apocalyptic number.

It is an amenable number.

4181470481521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181470481521 is an equidigital number, since it uses as much as digits as its factorization.

4181470481521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 4181470481521 in words is "four trillion, one hundred eighty-one billion, four hundred seventy million, four hundred eighty-one thousand, five hundred twenty-one".