20470634895 has 8 divisors (see below), whose sum is σ = 32753015856. Its totient is φ = 10917671936.

The previous prime is 20470634831. The next prime is 20470634957. The reversal of 20470634895 is 59843607402.

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 20470634895 - 2⁶ = 20470634831 is a prime.

It is a super-2 number, since 2×20470634895² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682354482 + ... + 682354511.

It is an arithmetic number, because the mean of its divisors is an integer number (4094126982).

Almost surely, 2^20470634895 is an apocalyptic number.

20470634895 is a deficient number, since it is larger than the sum of its proper divisors (12282380961).

20470634895 is a wasteful number, since it uses less digits than its factorization.

20470634895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364709001.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 20470634895 in words is "twenty billion, four hundred seventy million, six hundred thirty-four thousand, eight hundred ninety-five".