33455213977 has 2 divisors, whose sum is σ = 33455213978. Its totient is φ = 33455213976.

The previous prime is 33455213969. The next prime is 33455213993. The reversal of 33455213977 is 77931255433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17841212041 + 15614001936 = 133571^2 + 124956^2 .

It is a cyclic number.

It is not a de Polignac number, because 33455213977 - 2³ = 33455213969 is a prime.

It is a super-2 number, since 2×33455213977² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33455213977.

It is not a weakly prime, because it can be changed into another prime (33455213177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16727606988 + 16727606989.

It is an arithmetic number, because the mean of its divisors is an integer number (16727606989).

Almost surely, 2^33455213977 is an apocalyptic number.

It is an amenable number.

33455213977 is a deficient number, since it is larger than the sum of its proper divisors (1).

33455213977 is an equidigital number, since it uses as much as digits as its factorization.

33455213977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2381400, while the sum is 49.

The spelling of 33455213977 in words is "thirty-three billion, four hundred fifty-five million, two hundred thirteen thousand, nine hundred seventy-seven".