38678401657451 has 2 divisors, whose sum is σ = 38678401657452. Its totient is φ = 38678401657450.

The previous prime is 38678401657387. The next prime is 38678401657471. The reversal of 38678401657451 is 15475610487683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38678401657451 - 2⁶ = 38678401657387 is a prime.

It is not a weakly prime, because it can be changed into another prime (38678401657471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339200828725 + 19339200828726.

It is an arithmetic number, because the mean of its divisors is an integer number (19339200828726).

Almost surely, 2^{38678401657451} is an apocalyptic number.

38678401657451 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678401657451 is an equidigital number, since it uses as much as digits as its factorization.

38678401657451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135475200, while the sum is 65.

The spelling of 38678401657451 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred one million, six hundred fifty-seven thousand, four hundred fifty-one".