38513504377 has 2 divisors, whose sum is σ = 38513504378. Its totient is φ = 38513504376.

The previous prime is 38513504363. The next prime is 38513504411. The reversal of 38513504377 is 77340531583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36525325456 + 1988178921 = 191116^2 + 44589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38513504377 is a prime.

It is not a weakly prime, because it can be changed into another prime (38513504977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19256752188 + 19256752189.

It is an arithmetic number, because the mean of its divisors is an integer number (19256752189).

Almost surely, 2^38513504377 is an apocalyptic number.

It is an amenable number.

38513504377 is a deficient number, since it is larger than the sum of its proper divisors (1).

38513504377 is an equidigital number, since it uses as much as digits as its factorization.

38513504377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 38513504377 in words is "thirty-eight billion, five hundred thirteen million, five hundred four thousand, three hundred seventy-seven".