61000038851 has 2 divisors, whose sum is σ = 61000038852. Its totient is φ = 61000038850.

The previous prime is 61000038773. The next prime is 61000038899. The reversal of 61000038851 is 15883000016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61000038851 - 2¹⁸ = 60999776707 is a prime.

It is not a weakly prime, because it can be changed into another prime (61005038851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500019425 + 30500019426.

It is an arithmetic number, because the mean of its divisors is an integer number (30500019426).

Almost surely, 2^61000038851 is an apocalyptic number.

61000038851 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000038851 is an equidigital number, since it uses as much as digits as its factorization.

61000038851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 61000038851 its reverse (15883000016), we get a palindrome (76883038867).

The spelling of 61000038851 in words is "sixty-one billion, thirty-eight thousand, eight hundred fifty-one".