20670635242 has 8 divisors (see below), whose sum is σ = 31017621600. Its totient is φ = 10331428044.

The previous prime is 20670635201. The next prime is 20670635263. The reversal of 20670635242 is 24253607602.

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

It is a super-2 number, since 2×20670635242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938142 + ... + 1948777.

It is an arithmetic number, because the mean of its divisors is an integer number (3877202700).

Almost surely, 2^20670635242 is an apocalyptic number.

20670635242 is a deficient number, since it is larger than the sum of its proper divisors (10346986358).

20670635242 is a wasteful number, since it uses less digits than its factorization.

20670635242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889580.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 20670635242 in words is "twenty billion, six hundred seventy million, six hundred thirty-five thousand, two hundred forty-two".