38682253621997 has 4 divisors (see below), whose sum is σ = 38733084442236. Its totient is φ = 38631422801760.

The previous prime is 38682253621993. The next prime is 38682253622083. The reversal of 38682253621997 is 79912635228683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11015190139396 + 27667063482601 = 3318914^2 + 5259949^2 .

It is a cyclic number.

It is not a de Polignac number, because 38682253621997 - 2² = 38682253621993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38682253621997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38682253621993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25415408978 + ... + 25415410499.

It is an arithmetic number, because the mean of its divisors is an integer number (9683271110559).

Almost surely, 2^{38682253621997} is an apocalyptic number.

It is an amenable number.

38682253621997 is a deficient number, since it is larger than the sum of its proper divisors (50830820239).

38682253621997 is an equidigital number, since it uses as much as digits as its factorization.

38682253621997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50830820238.

The product of its digits is 470292480, while the sum is 71.

The spelling of 38682253621997 in words is "thirty-eight trillion, six hundred eighty-two billion, two hundred fifty-three million, six hundred twenty-one thousand, nine hundred ninety-seven".