15553939393924 has 6 divisors (see below), whose sum is σ = 27219393939374. Its totient is φ = 7776969696960.

The previous prime is 15553939393903. The next prime is 15553939393931. The reversal of 15553939393924 is 42939393935551.

It can be written as a sum of positive squares in only one way, i.e., 10582074060100 + 4971865333824 = 3253010^2 + 2229768^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1944242424237 + ... + 1944242424244.

Almost surely, 2^{15553939393924} is an apocalyptic number.

It is an amenable number.

15553939393924 is a deficient number, since it is larger than the sum of its proper divisors (11665454545450).

15553939393924 is a wasteful number, since it uses less digits than its factorization.

15553939393924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888484848485 (or 3888484848483 counting only the distinct ones).

The product of its digits is 531441000, while the sum is 70.

The spelling of 15553939393924 in words is "fifteen trillion, five hundred fifty-three billion, nine hundred thirty-nine million, three hundred ninety-three thousand, nine hundred twenty-four".