20775451470 has 16 divisors (see below), whose sum is σ = 49861083600. Its totient is φ = 5540120384.

The previous prime is 20775451453. The next prime is 20775451481. The reversal of 20775451470 is 7415457702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346257495 + ... + 346257554.

It is an arithmetic number, because the mean of its divisors is an integer number (3116317725).

Almost surely, 2^20775451470 is an apocalyptic number.

20775451470 is an abundant number, since it is smaller than the sum of its proper divisors (29085632130).

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

20775451470 is a wasteful number, since it uses less digits than its factorization.

20775451470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692515059.

The product of its (nonzero) digits is 274400, while the sum is 42.

The spelling of 20775451470 in words is "twenty billion, seven hundred seventy-five million, four hundred fifty-one thousand, four hundred seventy".