38575721623 has 2 divisors, whose sum is σ = 38575721624. Its totient is φ = 38575721622.

The previous prime is 38575721617. The next prime is 38575721651. The reversal of 38575721623 is 32612757583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38575721623 - 2³³ = 29985787031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38575721663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19287860811 + 19287860812.

It is an arithmetic number, because the mean of its divisors is an integer number (19287860812).

Almost surely, 2^38575721623 is an apocalyptic number.

38575721623 is a deficient number, since it is larger than the sum of its proper divisors (1).

38575721623 is an equidigital number, since it uses as much as digits as its factorization.

38575721623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 49.

The spelling of 38575721623 in words is "thirty-eight billion, five hundred seventy-five million, seven hundred twenty-one thousand, six hundred twenty-three".