33490138247 has 8 divisors (see below), whose sum is σ = 33578883072. Its totient is φ = 33401445400.

The previous prime is 33490138243. The next prime is 33490138249. The reversal of 33490138247 is 74283109433.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33490138247 - 2² = 33490138243 is a prime.

It is a super-2 number, since 2×33490138247² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33490138198 and 33490138207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33490138243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509122 + ... + 1531152.

It is an arithmetic number, because the mean of its divisors is an integer number (4197360384).

Almost surely, 2^33490138247 is an apocalyptic number.

33490138247 is a deficient number, since it is larger than the sum of its proper divisors (88744825).

33490138247 is a wasteful number, since it uses less digits than its factorization.

33490138247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25989.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 33490138247 in words is "thirty-three billion, four hundred ninety million, one hundred thirty-eight thousand, two hundred forty-seven".