15402351224240 has 20 divisors (see below), whose sum is σ = 35810466596544. Its totient is φ = 6160940489664.

The previous prime is 15402351224237. The next prime is 15402351224269. The reversal of 15402351224240 is 4242215320451.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 15402351224240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96264695072 + ... + 96264695231.

Almost surely, 2^{15402351224240} is an apocalyptic number.

15402351224240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15402351224240 is an abundant number, since it is smaller than the sum of its proper divisors (20408115372304).

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

15402351224240 is a wasteful number, since it uses less digits than its factorization.

15402351224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192529390316 (or 192529390310 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 15402351224240 its reverse (4242215320451), we get a palindrome (19644566544691).

The spelling of 15402351224240 in words is "fifteen trillion, four hundred two billion, three hundred fifty-one million, two hundred twenty-four thousand, two hundred forty".