33640350377 has 2 divisors, whose sum is σ = 33640350378. Its totient is φ = 33640350376.

The previous prime is 33640350299. The next prime is 33640350409. The reversal of 33640350377 is 77305304633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33205586176 + 434764201 = 182224^2 + 20851^2 .

It is an emirp because it is prime and its reverse (77305304633) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33640350377 - 2¹² = 33640346281 is a prime.

It is a super-2 number, since 2×33640350377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33640350077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16820175188 + 16820175189.

It is an arithmetic number, because the mean of its divisors is an integer number (16820175189).

Almost surely, 2^33640350377 is an apocalyptic number.

It is an amenable number.

33640350377 is a deficient number, since it is larger than the sum of its proper divisors (1).

33640350377 is an equidigital number, since it uses as much as digits as its factorization.

33640350377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 41.

The spelling of 33640350377 in words is "thirty-three billion, six hundred forty million, three hundred fifty thousand, three hundred seventy-seven".