20355273480 has 64 divisors (see below), whose sum is σ = 61153185600. Its totient is φ = 5420307200.

The previous prime is 20355273467. The next prime is 20355273509. The reversal of 20355273480 is 8437255302.

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, 36870 + ... + 205109.

It is an arithmetic number, because the mean of its divisors is an integer number (955518525).

Almost surely, 2^20355273480 is an apocalyptic number.

20355273480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20355273480 is an abundant number, since it is smaller than the sum of its proper divisors (40797912120).

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

20355273480 is a wasteful number, since it uses less digits than its factorization.

20355273480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242694 (or 242690 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 20355273480 in words is "twenty billion, three hundred fifty-five million, two hundred seventy-three thousand, four hundred eighty".