215653002541 has 2 divisors, whose sum is σ = 215653002542. Its totient is φ = 215653002540.

The previous prime is 215653002497. The next prime is 215653002611. The reversal of 215653002541 is 145200356512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180642850441 + 35010152100 = 425021^2 + 187110^2 .

It is a cyclic number.

It is not a de Polignac number, because 215653002541 - 2¹⁹ = 215652478253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215653002497 and 215653002506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215653003541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107826501270 + 107826501271.

It is an arithmetic number, because the mean of its divisors is an integer number (107826501271).

Almost surely, 2^215653002541 is an apocalyptic number.

It is an amenable number.

215653002541 is a deficient number, since it is larger than the sum of its proper divisors (1).

215653002541 is an equidigital number, since it uses as much as digits as its factorization.

215653002541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 215653002541 in words is "two hundred fifteen billion, six hundred fifty-three million, two thousand, five hundred forty-one".