38678401512257 has 8 divisors (see below), whose sum is σ = 41918973125736. Its totient is φ = 35475731321472.

The previous prime is 38678401512181. The next prime is 38678401512259. The reversal of 38678401512257 is 75221510487683.

It can be written as a sum of positive squares in 4 ways, for example, as 5538472732816 + 33139928779441 = 2353396^2 + 5756729^2 .

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

It is not a de Polignac number, because 38678401512257 - 2²⁸ = 38678133076801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38678401512196 and 38678401512205.

It is not an unprimeable number, because it can be changed into a prime (38678401512259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9475353548 + ... + 9475357629.

It is an arithmetic number, because the mean of its divisors is an integer number (5239871640717).

Almost surely, 2^{38678401512257} is an apocalyptic number.

It is an amenable number.

38678401512257 is a deficient number, since it is larger than the sum of its proper divisors (3240571613479).

38678401512257 is a wasteful number, since it uses less digits than its factorization.

38678401512257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18950711347.

The product of its (nonzero) digits is 22579200, while the sum is 59.

The spelling of 38678401512257 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred one million, five hundred twelve thousand, two hundred fifty-seven".