15541642530 has 160 divisors (see below), whose sum is σ = 42674860800. Its totient is φ = 4057267968.

The previous prime is 15541642513. The next prime is 15541642621. The reversal of 15541642530 is 3524614551.

15541642530 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 1 + 642 + 5 + 3 + 0 = 666.

15541642530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14957751 + ... + 14958789.

It is an arithmetic number, because the mean of its divisors is an integer number (266717880).

Almost surely, 2^15541642530 is an apocalyptic number.

15541642530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15541642530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21337430400).

15541642530 is an abundant number, since it is smaller than the sum of its proper divisors (27133218270).

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

15541642530 is a wasteful number, since it uses less digits than its factorization.

15541642530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 15541642530 in words is "fifteen billion, five hundred forty-one million, six hundred forty-two thousand, five hundred thirty".