15401421248 has 14 divisors (see below), whose sum is σ = 30562195416. Its totient is φ = 7700710592.

The previous prime is 15401421247. The next prime is 15401421251. The reversal of 15401421248 is 84212410451.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15401421247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120323540 + ... + 120323667.

Almost surely, 2^15401421248 is an apocalyptic number.

It is an amenable number.

15401421248 is a deficient number, since it is larger than the sum of its proper divisors (15160774168).

15401421248 is an equidigital number, since it uses as much as digits as its factorization.

15401421248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240647219 (or 240647209 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

Adding to 15401421248 its reverse (84212410451), we get a palindrome (99613831699).

The spelling of 15401421248 in words is "fifteen billion, four hundred one million, four hundred twenty-one thousand, two hundred forty-eight".