38401406666831 has 8 divisors (see below), whose sum is σ = 41358382724064. Its totient is φ = 35444862280800.

The previous prime is 38401406666747. The next prime is 38401406666933. The reversal of 38401406666831 is 13866660410483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38401406666831 - 2²⁶ = 38401339557967 is a prime.

It is a super-2 number, since 2×38401406666831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38401406626831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107733020 + ... + 108088881.

It is an arithmetic number, because the mean of its divisors is an integer number (5169797840508).

Almost surely, 2^{38401406666831} is an apocalyptic number.

38401406666831 is a deficient number, since it is larger than the sum of its proper divisors (2956976057233).

38401406666831 is a wasteful number, since it uses less digits than its factorization.

38401406666831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215835601.

The product of its (nonzero) digits is 11943936, while the sum is 56.

The spelling of 38401406666831 in words is "thirty-eight trillion, four hundred one billion, four hundred six million, six hundred sixty-six thousand, eight hundred thirty-one".