20701445178 has 8 divisors (see below), whose sum is σ = 41402890368. Its totient is φ = 6900481724.

The previous prime is 20701445069. The next prime is 20701445201. The reversal of 20701445178 is 87154410702.

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

20701445178 is an admirable number.

It is a Curzon 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, 1725120426 + ... + 1725120437.

It is an arithmetic number, because the mean of its divisors is an integer number (5175361296).

Almost surely, 2^20701445178 is an apocalyptic number.

20701445178 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.

20701445178 is a wasteful number, since it uses less digits than its factorization.

20701445178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450240868.

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 20701445178 in words is "twenty billion, seven hundred one million, four hundred forty-five thousand, one hundred seventy-eight".