61457445054547 has 2 divisors, whose sum is σ = 61457445054548. Its totient is φ = 61457445054546.

The previous prime is 61457445054539. The next prime is 61457445054613. The reversal of 61457445054547 is 74545054475416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61457445054547 - 2³ = 61457445054539 is a prime.

It is not a weakly prime, because it can be changed into another prime (61457445054347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30728722527273 + 30728722527274.

It is an arithmetic number, because the mean of its divisors is an integer number (30728722527274).

Almost surely, 2^{61457445054547} is an apocalyptic number.

61457445054547 is a deficient number, since it is larger than the sum of its proper divisors (1).

61457445054547 is an equidigital number, since it uses as much as digits as its factorization.

61457445054547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160000, while the sum is 61.

The spelling of 61457445054547 in words is "sixty-one trillion, four hundred fifty-seven billion, four hundred forty-five million, fifty-four thousand, five hundred forty-seven".