20854980480 has 64 divisors (see below), whose sum is σ = 66475256400. Its totient is φ = 5561327616.

The previous prime is 20854980467. The next prime is 20854980491. The reversal of 20854980480 is 8408945802.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5429065 + ... + 5432904.

Almost surely, 2^20854980480 is an apocalyptic number.

20854980480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20854980480 is an abundant number, since it is smaller than the sum of its proper divisors (45620275920).

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

20854980480 is a wasteful number, since it uses less digits than its factorization.

20854980480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861991 (or 10861979 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 20854980480 in words is "twenty billion, eight hundred fifty-four million, nine hundred eighty thousand, four hundred eighty".