13857438389048 has 8 divisors (see below), whose sum is σ = 25982696979480. Its totient is φ = 6928719194520.

The previous prime is 13857438389027. The next prime is 13857438389063. The reversal of 13857438389048 is 84098383475831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13857438389048² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 866089899308 + ... + 866089899323.

It is an arithmetic number, because the mean of its divisors is an integer number (3247837122435).

Almost surely, 2^{13857438389048} is an apocalyptic number.

It is an amenable number.

13857438389048 is a deficient number, since it is larger than the sum of its proper divisors (12125258590432).

13857438389048 is a wasteful number, since it uses less digits than its factorization.

13857438389048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732179798637 (or 1732179798633 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 71.

The spelling of 13857438389048 in words is "thirteen trillion, eight hundred fifty-seven billion, four hundred thirty-eight million, three hundred eighty-nine thousand, forty-eight".