20470415842 has 8 divisors (see below), whose sum is σ = 30709410732. Its totient is φ = 10233945600.

The previous prime is 20470415701. The next prime is 20470415851. The reversal of 20470415842 is 24851407402.

It can be written as a sum of positive squares in 2 ways, for example, as 18889478721 + 1580937121 = 137439^2 + 39761^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610759 + ... + 643402.

Almost surely, 2^20470415842 is an apocalyptic number.

20470415842 is a deficient number, since it is larger than the sum of its proper divisors (10238994890).

20470415842 is a wasteful number, since it uses less digits than its factorization.

20470415842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262324.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 20470415842 in words is "twenty billion, four hundred seventy million, four hundred fifteen thousand, eight hundred forty-two".