20662063520 has 48 divisors (see below), whose sum is σ = 55787574528. Its totient is φ = 7084135680.

The previous prime is 20662063519. The next prime is 20662063523. The reversal of 20662063520 is 2536026602.

It is a super-3 number, since 3×20662063520³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (20662063523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9223016 + ... + 9225255.

It is an arithmetic number, because the mean of its divisors is an integer number (1162241136).

Almost surely, 2^20662063520 is an apocalyptic number.

20662063520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20662063520 is an abundant number, since it is smaller than the sum of its proper divisors (35125511008).

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

20662063520 is a wasteful number, since it uses less digits than its factorization.

20662063520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18448293 (or 18448285 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20662063520 in words is "twenty billion, six hundred sixty-two million, sixty-three thousand, five hundred twenty".