18615042480 has 80 divisors (see below), whose sum is σ = 57790658304. Its totient is φ = 4956783360.

The previous prime is 18615042443. The next prime is 18615042541. The reversal of 18615042480 is 8424051681.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 109717 + ... + 221963.

Almost surely, 2^18615042480 is an apocalyptic number.

18615042480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18615042480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28895329152).

18615042480 is an abundant number, since it is smaller than the sum of its proper divisors (39175615824).

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

18615042480 is a wasteful number, since it uses less digits than its factorization.

18615042480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112954 (or 112948 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 18615042480 in words is "eighteen billion, six hundred fifteen million, forty-two thousand, four hundred eighty".