15540451122 has 32 divisors (see below), whose sum is σ = 35524944000. Its totient is φ = 4439639808.

The previous prime is 15540451079. The next prime is 15540451123. The reversal of 15540451122 is 22115404551.

It is a self number, because there is not a number n which added to its sum of digits gives 15540451122.

It is not an unprimeable number, because it can be changed into a prime (15540451123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559704 + ... + 586812.

It is an arithmetic number, because the mean of its divisors is an integer number (1110154500).

Almost surely, 2^15540451122 is an apocalyptic number.

15540451122 is an abundant number, since it is smaller than the sum of its proper divisors (19984492878).

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

15540451122 is a wasteful number, since it uses less digits than its factorization.

15540451122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40770.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 15540451122 its reverse (22115404551), we get a palindrome (37655855673).

The spelling of 15540451122 in words is "fifteen billion, five hundred forty million, four hundred fifty-one thousand, one hundred twenty-two".