38678632536457 has 8 divisors (see below), whose sum is σ = 40988290157640. Its totient is φ = 36434035693440.

The previous prime is 38678632536413. The next prime is 38678632536473. The reversal of 38678632536457 is 75463523687683.

It can be written as a sum of positive squares in 4 ways, for example, as 5090163187321 + 33588469349136 = 2256139^2 + 5795556^2 .

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 38678632536457 - 2⁷ = 38678632536329 is a prime.

It is a super-3 number, since 3×38678632536457³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38678632536457.

It is not an unprimeable number, because it can be changed into a prime (38678632536497) 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, 16265193318 + ... + 16265195695.

It is an arithmetic number, because the mean of its divisors is an integer number (5123536269705).

Almost surely, 2^{38678632536457} is an apocalyptic number.

It is an amenable number.

38678632536457 is a deficient number, since it is larger than the sum of its proper divisors (2309657621183).

38678632536457 is a wasteful number, since it uses less digits than its factorization.

38678632536457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32530389083.

The product of its digits is 3657830400, while the sum is 73.

The spelling of 38678632536457 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred thirty-two million, five hundred thirty-six thousand, four hundred fifty-seven".