38112887261 has 2 divisors, whose sum is σ = 38112887262. Its totient is φ = 38112887260.

The previous prime is 38112887257. The next prime is 38112887389. The reversal of 38112887261 is 16278821183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35572223236 + 2540664025 = 188606^2 + 50405^2 .

It is a cyclic number.

It is not a de Polignac number, because 38112887261 - 2² = 38112887257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38112887861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19056443630 + 19056443631.

It is an arithmetic number, because the mean of its divisors is an integer number (19056443631).

Almost surely, 2^38112887261 is an apocalyptic number.

It is an amenable number.

38112887261 is a deficient number, since it is larger than the sum of its proper divisors (1).

38112887261 is an equidigital number, since it uses as much as digits as its factorization.

38112887261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The spelling of 38112887261 in words is "thirty-eight billion, one hundred twelve million, eight hundred eighty-seven thousand, two hundred sixty-one".