20347349361 has 8 divisors (see below), whose sum is σ = 27132033024. Its totient is φ = 13563782640.

The previous prime is 20347349329. The next prime is 20347349381. The reversal of 20347349361 is 16394374302.

It is a happy number.

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

It is not a de Polignac number, because 20347349361 - 2⁵ = 20347349329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20347349381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235761 + ... + 310286.

It is an arithmetic number, because the mean of its divisors is an integer number (3391504128).

Almost surely, 2^20347349361 is an apocalyptic number.

It is an amenable number.

20347349361 is a deficient number, since it is larger than the sum of its proper divisors (6784683663).

20347349361 is a wasteful number, since it uses less digits than its factorization.

20347349361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558471.

The product of its (nonzero) digits is 326592, while the sum is 42.

The spelling of 20347349361 in words is "twenty billion, three hundred forty-seven million, three hundred forty-nine thousand, three hundred sixty-one".