15495258240 has 1536 divisors, whose sum is σ = 73322496000. Its totient is φ = 2980454400.

The previous prime is 15495258199. The next prime is 15495258257. The reversal of 15495258240 is 4285259451.

15495258240 is a `hidden beast` number, since 1 + 5 + 4 + 9 + 525 + 82 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 499847025 + ... + 499847055.

It is an arithmetic number, because the mean of its divisors is an integer number (47736000).

Almost surely, 2^15495258240 is an apocalyptic number.

15495258240 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 15495258240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36661248000).

15495258240 is an abundant number, since it is smaller than the sum of its proper divisors (57827237760).

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

15495258240 is a wasteful number, since it uses less digits than its factorization.

15495258240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 15495258240 in words is "fifteen billion, four hundred ninety-five million, two hundred fifty-eight thousand, two hundred forty".