38678401657457 has 8 divisors (see below), whose sum is σ = 39926483600640. Its totient is φ = 37430344187280.

The previous prime is 38678401657451. The next prime is 38678401657471. The reversal of 38678401657457 is 75475610487683.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38678401657457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38678401657451) 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, 2879123 + ... + 9254520.

It is an arithmetic number, because the mean of its divisors is an integer number (4990810450080).

Almost surely, 2^{38678401657457} is an apocalyptic number.

It is an amenable number.

38678401657457 is a deficient number, since it is larger than the sum of its proper divisors (1248081943183).

38678401657457 is a wasteful number, since it uses less digits than its factorization.

38678401657457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236503.

The product of its (nonzero) digits is 948326400, while the sum is 71.

The spelling of 38678401657457 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred one million, six hundred fifty-seven thousand, four hundred fifty-seven".