38400073985 has 32 divisors (see below), whose sum is σ = 56766861312. Its totient is φ = 24283307520.

The previous prime is 38400073963. The next prime is 38400073993. The reversal of 38400073985 is 58937000483.

It is not a de Polignac number, because 38400073985 - 2¹⁸ = 38399811841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 455765 + ... + 533405.

It is an arithmetic number, because the mean of its divisors is an integer number (1773964416).

Almost surely, 2^38400073985 is an apocalyptic number.

38400073985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38400073985 is a deficient number, since it is larger than the sum of its proper divisors (18366787327).

38400073985 is a wasteful number, since it uses less digits than its factorization.

38400073985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78753.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 38400073985 in words is "thirty-eight billion, four hundred million, seventy-three thousand, nine hundred eighty-five".