61501334827 has 2 divisors, whose sum is σ = 61501334828. Its totient is φ = 61501334826.

The previous prime is 61501334801. The next prime is 61501334953. The reversal of 61501334827 is 72843310516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61501334827 - 2¹⁵ = 61501302059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61501334827.

It is not a weakly prime, because it can be changed into another prime (61501334627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30750667413 + 30750667414.

It is an arithmetic number, because the mean of its divisors is an integer number (30750667414).

Almost surely, 2^61501334827 is an apocalyptic number.

61501334827 is a deficient number, since it is larger than the sum of its proper divisors (1).

61501334827 is an equidigital number, since it uses as much as digits as its factorization.

61501334827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 61501334827 in words is "sixty-one billion, five hundred one million, three hundred thirty-four thousand, eight hundred twenty-seven".