38277781499 has 2 divisors, whose sum is σ = 38277781500. Its totient is φ = 38277781498.

The previous prime is 38277781481. The next prime is 38277781543. The reversal of 38277781499 is 99418777283.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38277781499 is a prime.

It is not a weakly prime, because it can be changed into another prime (38277781439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19138890749 + 19138890750.

It is an arithmetic number, because the mean of its divisors is an integer number (19138890750).

Almost surely, 2^38277781499 is an apocalyptic number.

38277781499 is a deficient number, since it is larger than the sum of its proper divisors (1).

38277781499 is an equidigital number, since it uses as much as digits as its factorization.

38277781499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42674688, while the sum is 65.

The spelling of 38277781499 in words is "thirty-eight billion, two hundred seventy-seven million, seven hundred eighty-one thousand, four hundred ninety-nine".