61536187267 has 2 divisors, whose sum is σ = 61536187268. Its totient is φ = 61536187266.

The previous prime is 61536187253. The next prime is 61536187303. The reversal of 61536187267 is 76278163516.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61536187267 - 2¹¹ = 61536185219 is a prime.

It is not a weakly prime, because it can be changed into another prime (61536187217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30768093633 + 30768093634.

It is an arithmetic number, because the mean of its divisors is an integer number (30768093634).

Almost surely, 2^61536187267 is an apocalyptic number.

61536187267 is a deficient number, since it is larger than the sum of its proper divisors (1).

61536187267 is an equidigital number, since it uses as much as digits as its factorization.

61536187267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The spelling of 61536187267 in words is "sixty-one billion, five hundred thirty-six million, one hundred eighty-seven thousand, two hundred sixty-seven".