15547090949 has 12 divisors (see below), whose sum is σ = 16942273956. Its totient is φ = 14259727872.

The previous prime is 15547090883. The next prime is 15547090961. The reversal of 15547090949 is 94909074551.

15547090949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1292402500 + 14254688449 = 35950^2 + 119393^2 .

It is not a de Polignac number, because 15547090949 - 2⁸ = 15547090693 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 15547090949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15547090969) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 266444 + ... + 319509.

It is an arithmetic number, because the mean of its divisors is an integer number (1411856163).

Almost surely, 2^15547090949 is an apocalyptic number.

It is an amenable number.

15547090949 is a deficient number, since it is larger than the sum of its proper divisors (1395183007).

15547090949 is a wasteful number, since it uses less digits than its factorization.

15547090949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586136 (or 586123 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 15547090949 in words is "fifteen billion, five hundred forty-seven million, ninety thousand, nine hundred forty-nine".