15540525434 has 16 divisors (see below), whose sum is σ = 26850674688. Its totient is φ = 6607781712.

The previous prime is 15540525409. The next prime is 15540525439. The reversal of 15540525434 is 43452504551.

It is not an unprimeable number, because it can be changed into a prime (15540525439) 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 7 ways as a sum of consecutive naturals, for example, 4368449 + ... + 4372004.

It is an arithmetic number, because the mean of its divisors is an integer number (1678167168).

Almost surely, 2^15540525434 is an apocalyptic number.

15540525434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15540525434 is a deficient number, since it is larger than the sum of its proper divisors (11310149254).

15540525434 is a wasteful number, since it uses less digits than its factorization.

15540525434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740589.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 15540525434 in words is "fifteen billion, five hundred forty million, five hundred twenty-five thousand, four hundred thirty-four".