20266246642 has 8 divisors (see below), whose sum is σ = 30402169776. Its totient is φ = 10132190052.

The previous prime is 20266246597. The next prime is 20266246667. The reversal of 20266246642 is 24664266202.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20266246595 and 20266246604.

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, 439168 + ... + 483115.

It is an arithmetic number, because the mean of its divisors is an integer number (3800271222).

Almost surely, 2^20266246642 is an apocalyptic number.

20266246642 is a deficient number, since it is larger than the sum of its proper divisors (10135923134).

20266246642 is a wasteful number, since it uses less digits than its factorization.

20266246642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933272.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 20266246642 in words is "twenty billion, two hundred sixty-six million, two hundred forty-six thousand, six hundred forty-two".