20449861266 has 8 divisors (see below), whose sum is σ = 40899722544. Its totient is φ = 6816620420.

The previous prime is 20449861231. The next prime is 20449861277. The reversal of 20449861266 is 66216894402.

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

20449861266 is an admirable number.

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, 1704155100 + ... + 1704155111.

It is an arithmetic number, because the mean of its divisors is an integer number (5112465318).

Almost surely, 2^20449861266 is an apocalyptic number.

20449861266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20449861266 is a wasteful number, since it uses less digits than its factorization.

20449861266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408310216.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 20449861266 in words is "twenty billion, four hundred forty-nine million, eight hundred sixty-one thousand, two hundred sixty-six".