536614405661 has 2 divisors, whose sum is σ = 536614405662. Its totient is φ = 536614405660.

The previous prime is 536614405633. The next prime is 536614405693. The reversal of 536614405661 is 166504416635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532599282436 + 4015123225 = 729794^2 + 63365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536614405661 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (536614404661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268307202830 + 268307202831.

It is an arithmetic number, because the mean of its divisors is an integer number (268307202831).

Almost surely, 2^536614405661 is an apocalyptic number.

It is an amenable number.

536614405661 is a deficient number, since it is larger than the sum of its proper divisors (1).

536614405661 is an equidigital number, since it uses as much as digits as its factorization.

536614405661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 536614405661 in words is "five hundred thirty-six billion, six hundred fourteen million, four hundred five thousand, six hundred sixty-one".