15480020000 has 60 divisors (see below), whose sum is σ = 38083220406. Its totient is φ = 6192000000.

The previous prime is 15480019991. The next prime is 15480020009. The reversal of 15480020000 is 2008451.

It is an interprime number because it is at equal distance from previous prime (15480019991) and next prime (15480020009).

It can be written as a sum of positive squares in 5 ways, for example, as 686649616 + 14793370384 = 26204^2 + 121628^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (15480020009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 367001 + ... + 407000.

Almost surely, 2^15480020000 is an apocalyptic number.

15480020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15480020000 is an abundant number, since it is smaller than the sum of its proper divisors (22603200406).

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

15480020000 is an frugal number, since it uses more digits than its factorization.

15480020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774031 (or 774008 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 15480020000 its reverse (2008451), we get a palindrome (15482028451).

The spelling of 15480020000 in words is "fifteen billion, four hundred eighty million, twenty thousand".