38723855535 has 48 divisors (see below), whose sum is σ = 71094179520. Its totient is φ = 19431152640.

The previous prime is 38723855491. The next prime is 38723855537. The reversal of 38723855535 is 53555832783.

38723855535 is a `hidden beast` number, since 3 + 8 + 7 + 2 + 3 + 85 + 553 + 5 = 666.

It is not a de Polignac number, because 38723855535 - 2¹⁴ = 38723839151 is a prime.

It is a super-4 number, since 4×38723855535⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38723855537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2801421 + ... + 2815209.

It is an arithmetic number, because the mean of its divisors is an integer number (1481128740).

Almost surely, 2^38723855535 is an apocalyptic number.

38723855535 is a deficient number, since it is larger than the sum of its proper divisors (32370323985).

38723855535 is a wasteful number, since it uses less digits than its factorization.

38723855535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17488 (or 17485 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 38723855535 in words is "thirty-eight billion, seven hundred twenty-three million, eight hundred fifty-five thousand, five hundred thirty-five".