38406850646378 has 4 divisors (see below), whose sum is σ = 57610275969570. Its totient is φ = 19203425323188.

The previous prime is 38406850646357. The next prime is 38406850646429. The reversal of 38406850646378 is 87364605860483.

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

It can be written as a sum of positive squares in only one way, i.e., 31107089581129 + 7299761065249 = 5577373^2 + 2701807^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9601712661593 + ... + 9601712661596.

Almost surely, 2^{38406850646378} is an apocalyptic number.

38406850646378 is a deficient number, since it is larger than the sum of its proper divisors (19203425323192).

38406850646378 is a wasteful number, since it uses less digits than its factorization.

38406850646378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19203425323191.

The product of its (nonzero) digits is 557383680, while the sum is 68.

The spelling of 38406850646378 in words is "thirty-eight trillion, four hundred six billion, eight hundred fifty million, six hundred forty-six thousand, three hundred seventy-eight".