20115530347 has 8 divisors (see below), whose sum is σ = 23235051312. Its totient is φ = 17211148800.

The previous prime is 20115530341. The next prime is 20115530389. The reversal of 20115530347 is 74303551102.

It is a happy number.

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 20115530347 - 2²⁷ = 19981312619 is a prime.

It is a super-2 number, since 2×20115530347² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20115530341) 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, 53784654 + ... + 53785027.

It is an arithmetic number, because the mean of its divisors is an integer number (2904381414).

Almost surely, 2^20115530347 is an apocalyptic number.

20115530347 is a deficient number, since it is larger than the sum of its proper divisors (3119520965).

20115530347 is a wasteful number, since it uses less digits than its factorization.

20115530347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107569709.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 20115530347 in words is "twenty billion, one hundred fifteen million, five hundred thirty thousand, three hundred forty-seven".