23554549980 has 96 divisors (see below), whose sum is σ = 78917832000. Its totient is φ = 5798041344.

The previous prime is 23554549973. The next prime is 23554549981. The reversal of 23554549980 is 8994545532.

23554549980 is a `hidden beast` number, since 2 + 3 + 5 + 5 + 4 + 549 + 98 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23554549981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1670655 + ... + 1684694.

It is an arithmetic number, because the mean of its divisors is an integer number (822060750).

Almost surely, 2^23554549980 is an apocalyptic number.

23554549980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23554549980 is an abundant number, since it is smaller than the sum of its proper divisors (55363282020).

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

23554549980 is a wasteful number, since it uses less digits than its factorization.

23554549980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355380 (or 3355372 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 23554549980 in words is "twenty-three billion, five hundred fifty-four million, five hundred forty-nine thousand, nine hundred eighty".