61801610867 has 2 divisors, whose sum is σ = 61801610868. Its totient is φ = 61801610866.

The previous prime is 61801610797. The next prime is 61801610869. The reversal of 61801610867 is 76801610816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61801610867 - 2¹² = 61801606771 is a prime.

Together with 61801610869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61801610869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30900805433 + 30900805434.

It is an arithmetic number, because the mean of its divisors is an integer number (30900805434).

Almost surely, 2^61801610867 is an apocalyptic number.

61801610867 is a deficient number, since it is larger than the sum of its proper divisors (1).

61801610867 is an equidigital number, since it uses as much as digits as its factorization.

61801610867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 61801610867 in words is "sixty-one billion, eight hundred one million, six hundred ten thousand, eight hundred sixty-seven".