20402291060 has 12 divisors (see below), whose sum is σ = 42844811268. Its totient is φ = 8160916416.

The previous prime is 20402291057. The next prime is 20402291083. The reversal of 20402291060 is 6019220402.

It can be written as a sum of positive squares in 2 ways, for example, as 6770327524 + 13631963536 = 82282^2 + 116756^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510057257 + ... + 510057296.

It is an arithmetic number, because the mean of its divisors is an integer number (3570400939).

Almost surely, 2^20402291060 is an apocalyptic number.

20402291060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20402291060 is an abundant number, since it is smaller than the sum of its proper divisors (22442520208).

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

20402291060 is a wasteful number, since it uses less digits than its factorization.

20402291060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020114562 (or 1020114560 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 20402291060 in words is "twenty billion, four hundred two million, two hundred ninety-one thousand, sixty".