61351408605827 has 2 divisors, whose sum is σ = 61351408605828. Its totient is φ = 61351408605826.

The previous prime is 61351408605779. The next prime is 61351408605829. The reversal of 61351408605827 is 72850680415316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61351408605827 - 2⁶ = 61351408605763 is a prime.

Together with 61351408605829, 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 (61351408605829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30675704302913 + 30675704302914.

It is an arithmetic number, because the mean of its divisors is an integer number (30675704302914).

Almost surely, 2^{61351408605827} is an apocalyptic number.

61351408605827 is a deficient number, since it is larger than the sum of its proper divisors (1).

61351408605827 is an equidigital number, since it uses as much as digits as its factorization.

61351408605827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 61351408605827 in words is "sixty-one trillion, three hundred fifty-one billion, four hundred eight million, six hundred five thousand, eight hundred twenty-seven".