36615666433 has 2 divisors, whose sum is σ = 36615666434. Its totient is φ = 36615666432.

The previous prime is 36615666397. The next prime is 36615666457. The reversal of 36615666433 is 33466651663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27087563889 + 9528102544 = 164583^2 + 97612^2 .

It is a cyclic number.

It is not a de Polignac number, because 36615666433 - 2¹³ = 36615658241 is a prime.

It is not a weakly prime, because it can be changed into another prime (36615666463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18307833216 + 18307833217.

It is an arithmetic number, because the mean of its divisors is an integer number (18307833217).

Almost surely, 2^36615666433 is an apocalyptic number.

It is an amenable number.

36615666433 is a deficient number, since it is larger than the sum of its proper divisors (1).

36615666433 is an equidigital number, since it uses as much as digits as its factorization.

36615666433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 49.

The spelling of 36615666433 in words is "thirty-six billion, six hundred fifteen million, six hundred sixty-six thousand, four hundred thirty-three".