20545510260 has 48 divisors (see below), whose sum is σ = 62757196992. Its totient is φ = 4980729600.

The previous prime is 20545510243. The next prime is 20545510267. The reversal of 20545510260 is 6201554502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545510267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15564121 + ... + 15565440.

It is an arithmetic number, because the mean of its divisors is an integer number (1307441604).

Almost surely, 2^20545510260 is an apocalyptic number.

20545510260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20545510260 is an abundant number, since it is smaller than the sum of its proper divisors (42211686732).

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

20545510260 is a wasteful number, since it uses less digits than its factorization.

20545510260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31129584 (or 31129582 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 20545510260 in words is "twenty billion, five hundred forty-five million, five hundred ten thousand, two hundred sixty".