36621356473469 has 2 divisors, whose sum is σ = 36621356473470. Its totient is φ = 36621356473468.

The previous prime is 36621356473237. The next prime is 36621356473501. The reversal of 36621356473469 is 96437465312663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31643718825625 + 4977637647844 = 5625275^2 + 2231062^2 .

It is an emirp because it is prime and its reverse (96437465312663) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36621356473469 is a prime.

It is a super-2 number, since 2×36621356473469² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36621352473469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18310678236734 + 18310678236735.

It is an arithmetic number, because the mean of its divisors is an integer number (18310678236735).

Almost surely, 2^{36621356473469} is an apocalyptic number.

It is an amenable number.

36621356473469 is a deficient number, since it is larger than the sum of its proper divisors (1).

36621356473469 is an equidigital number, since it uses as much as digits as its factorization.

36621356473469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 65.

The spelling of 36621356473469 in words is "thirty-six trillion, six hundred twenty-one billion, three hundred fifty-six million, four hundred seventy-three thousand, four hundred sixty-nine".