15454441540 has 48 divisors (see below), whose sum is σ = 34179808320. Its totient is φ = 5853444480.

The previous prime is 15454441523. The next prime is 15454441547. The reversal of 15454441540 is 4514445451.

It is a self number, because there is not a number n which added to its sum of digits gives 15454441540.

It is not an unprimeable number, because it can be changed into a prime (15454441547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827910 + ... + 846370.

It is an arithmetic number, because the mean of its divisors is an integer number (712079340).

Almost surely, 2^15454441540 is an apocalyptic number.

15454441540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15454441540 is an abundant number, since it is smaller than the sum of its proper divisors (18725366780).

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

15454441540 is a wasteful number, since it uses less digits than its factorization.

15454441540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20692 (or 20690 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 15454441540 its reverse (4514445451), we get a palindrome (19968886991).

The spelling of 15454441540 in words is "fifteen billion, four hundred fifty-four million, four hundred forty-one thousand, five hundred forty".