38839494497445 has 48 divisors (see below), whose sum is σ = 70110636102000. Its totient is φ = 19865878502400.

The previous prime is 38839494497437. The next prime is 38839494497509. The reversal of 38839494497445 is 54479449493883.

38839494497445 is a `hidden beast` number, since 3 + 8 + 8 + 3 + 9 + 49 + 44 + 97 + 445 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 822429520641 + 38017064976804 = 906879^2 + 6165798^2 .

It is not a de Polignac number, because 38839494497445 - 2³ = 38839494497437 is a prime.

It is a super-2 number, since 2×38839494497445² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99678256 + ... + 100067145.

It is an arithmetic number, because the mean of its divisors is an integer number (1460638252125).

Almost surely, 2^{38839494497445} is an apocalyptic number.

It is an amenable number.

38839494497445 is a deficient number, since it is larger than the sum of its proper divisors (31271141604555).

38839494497445 is a wasteful number, since it uses less digits than its factorization.

38839494497445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199745590 (or 199745587 counting only the distinct ones).

The product of its digits is 15049359360, while the sum is 81.

The spelling of 38839494497445 in words is "thirty-eight trillion, eight hundred thirty-nine billion, four hundred ninety-four million, four hundred ninety-seven thousand, four hundred forty-five".