33897520847 has 2 divisors, whose sum is σ = 33897520848. Its totient is φ = 33897520846.

The previous prime is 33897520837. The next prime is 33897520859. The reversal of 33897520847 is 74802579833.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33897520847 - 2¹⁴ = 33897504463 is a prime.

It is a super-2 number, since 2×33897520847² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33897520792 and 33897520801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33897520837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16948760423 + 16948760424.

It is an arithmetic number, because the mean of its divisors is an integer number (16948760424).

Almost surely, 2^33897520847 is an apocalyptic number.

33897520847 is a deficient number, since it is larger than the sum of its proper divisors (1).

33897520847 is an equidigital number, since it uses as much as digits as its factorization.

33897520847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 33897520847 in words is "thirty-three billion, eight hundred ninety-seven million, five hundred twenty thousand, eight hundred forty-seven".