18553982977 has 8 divisors (see below), whose sum is σ = 18592176960. Its totient is φ = 18515819280.

The previous prime is 18553982969. The next prime is 18553982981. The reversal of 18553982977 is 77928935581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18553982977 - 2³ = 18553982969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18553982927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524924 + ... + 1537042.

It is an arithmetic number, because the mean of its divisors is an integer number (2324022120).

Almost surely, 2^18553982977 is an apocalyptic number.

It is an amenable number.

18553982977 is a deficient number, since it is larger than the sum of its proper divisors (38193983).

18553982977 is a wasteful number, since it uses less digits than its factorization.

18553982977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15143.

The product of its digits is 38102400, while the sum is 64.

The spelling of 18553982977 in words is "eighteen billion, five hundred fifty-three million, nine hundred eighty-two thousand, nine hundred seventy-seven".