20461366016 has 144 divisors (see below), whose sum is σ = 50568592704. Its totient is φ = 8046231552.

The previous prime is 20461365997. The next prime is 20461366031. The reversal of 20461366016 is 61066316402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027670 + ... + 4032746.

Almost surely, 2^20461366016 is an apocalyptic number.

20461366016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20461366016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25284296352).

20461366016 is an abundant number, since it is smaller than the sum of its proper divisors (30107226688).

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

20461366016 is a wasteful number, since it uses less digits than its factorization.

20461366016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286 (or 5272 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 20461366016 in words is "twenty billion, four hundred sixty-one million, three hundred sixty-six thousand, sixteen".