20880258480 has 60 divisors (see below), whose sum is σ = 70122870480. Its totient is φ = 5568068736.

The previous prime is 20880258479. The next prime is 20880258491. The reversal of 20880258480 is 8485208802.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×20880258480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14499460 + ... + 14500899.

It is an arithmetic number, because the mean of its divisors is an integer number (1168714508).

Almost surely, 2^20880258480 is an apocalyptic number.

20880258480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20880258480 is an abundant number, since it is smaller than the sum of its proper divisors (49242612000).

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

20880258480 is a wasteful number, since it uses less digits than its factorization.

20880258480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29000378 (or 29000369 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 45.

The spelling of 20880258480 in words is "twenty billion, eight hundred eighty million, two hundred fifty-eight thousand, four hundred eighty".