20154800080 has 40 divisors (see below), whose sum is σ = 46876276512. Its totient is φ = 8059104384.

The previous prime is 20154800063. The next prime is 20154800089. The reversal of 20154800080 is 8000845102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154800089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194527 + ... + 279553.

Almost surely, 2^20154800080 is an apocalyptic number.

20154800080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20154800080 is an abundant number, since it is smaller than the sum of its proper divisors (26721476432).

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

20154800080 is a wasteful number, since it uses less digits than its factorization.

20154800080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88003 (or 87997 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The spelling of 20154800080 in words is "twenty billion, one hundred fifty-four million, eight hundred thousand, eighty".