14978910557 has 4 divisors (see below), whose sum is σ = 16131134460. Its totient is φ = 13826686656.

The previous prime is 14978910539. The next prime is 14978910593. The reversal of 14978910557 is 75501987941.

It is a happy number.

14978910557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8145243001 + 6833667556 = 90251^2 + 82666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14978910557 is a prime.

It is a super-2 number, since 2×14978910557² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14978910157) 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 3 ways as a sum of consecutive naturals, for example, 576111932 + ... + 576111957.

It is an arithmetic number, because the mean of its divisors is an integer number (4032783615).

Almost surely, 2^14978910557 is an apocalyptic number.

It is an amenable number.

14978910557 is a deficient number, since it is larger than the sum of its proper divisors (1152223903).

14978910557 is a wasteful number, since it uses less digits than its factorization.

14978910557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152223902.

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 14978910557 in words is "fourteen billion, nine hundred seventy-eight million, nine hundred ten thousand, five hundred fifty-seven".