15418441480 has 128 divisors (see below), whose sum is σ = 40595788800. Its totient is φ = 5219251200.

The previous prime is 15418441457. The next prime is 15418441481. The reversal of 15418441480 is 8414481451.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (15418441481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281110 + ... + 331450.

It is an arithmetic number, because the mean of its divisors is an integer number (317154600).

Almost surely, 2^15418441480 is an apocalyptic number.

15418441480 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 15418441480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20297894400).

15418441480 is an abundant number, since it is smaller than the sum of its proper divisors (25177347320).

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

15418441480 is a wasteful number, since it uses less digits than its factorization.

15418441480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50415 (or 50411 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 40.

The spelling of 15418441480 in words is "fifteen billion, four hundred eighteen million, four hundred forty-one thousand, four hundred eighty".