33378901357 has 2 divisors, whose sum is σ = 33378901358. Its totient is φ = 33378901356.

The previous prime is 33378901349. The next prime is 33378901411. The reversal of 33378901357 is 75310987333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27376680681 + 6002220676 = 165459^2 + 77474^2 .

It is a cyclic number.

It is not a de Polignac number, because 33378901357 - 2³ = 33378901349 is a prime.

It is a super-2 number, since 2×33378901357² (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 33378901357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33378908357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16689450678 + 16689450679.

It is an arithmetic number, because the mean of its divisors is an integer number (16689450679).

Almost surely, 2^33378901357 is an apocalyptic number.

It is an amenable number.

33378901357 is a deficient number, since it is larger than the sum of its proper divisors (1).

33378901357 is an equidigital number, since it uses as much as digits as its factorization.

33378901357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The spelling of 33378901357 in words is "thirty-three billion, three hundred seventy-eight million, nine hundred one thousand, three hundred fifty-seven".