15540451045 has 8 divisors (see below), whose sum is σ = 21312618624. Its totient is φ = 10656309264.

The previous prime is 15540451039. The next prime is 15540451079. The reversal of 15540451045 is 54015404551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15540451045 - 2¹⁵ = 15540418277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15540451045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222006409 + ... + 222006478.

It is an arithmetic number, because the mean of its divisors is an integer number (2664077328).

Almost surely, 2^15540451045 is an apocalyptic number.

It is an amenable number.

15540451045 is a deficient number, since it is larger than the sum of its proper divisors (5772167579).

15540451045 is an equidigital number, since it uses as much as digits as its factorization.

15540451045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444012899.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 15540451045 its reverse (54015404551), we get a palindrome (69555855596).

The spelling of 15540451045 in words is "fifteen billion, five hundred forty million, four hundred fifty-one thousand, forty-five".