15550041380 has 12 divisors (see below), whose sum is σ = 32655086940. Its totient is φ = 6220016544.

The previous prime is 15550041361. The next prime is 15550041383. The reversal of 15550041380 is 8314005551.

It can be written as a sum of positive squares in 2 ways, for example, as 3801215716 + 11748825664 = 61654^2 + 108392^2 .

It is not an unprimeable number, because it can be changed into a prime (15550041383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 388751015 + ... + 388751054.

It is an arithmetic number, because the mean of its divisors is an integer number (2721257245).

Almost surely, 2^15550041380 is an apocalyptic number.

15550041380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15550041380 is an abundant number, since it is smaller than the sum of its proper divisors (17105045560).

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

15550041380 is a wasteful number, since it uses less digits than its factorization.

15550041380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777502078 (or 777502076 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 15550041380 in words is "fifteen billion, five hundred fifty million, forty-one thousand, three hundred eighty".