655446700701647 has 2 divisors, whose sum is σ = 655446700701648. Its totient is φ = 655446700701646.

The previous prime is 655446700701619. The next prime is 655446700701659. The reversal of 655446700701647 is 746107007644556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655446700701647 - 2¹⁶ = 655446700636111 is a prime.

It is a super-2 number, since 2×655446700701647² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655446700701647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655446700781647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327723350350823 + 327723350350824.

It is an arithmetic number, because the mean of its divisors is an integer number (327723350350824).

Almost surely, 2^{655446700701647} is an apocalyptic number.

655446700701647 is a deficient number, since it is larger than the sum of its proper divisors (1).

655446700701647 is an equidigital number, since it uses as much as digits as its factorization.

655446700701647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118540800, while the sum is 62.

The spelling of 655446700701647 in words is "six hundred fifty-five trillion, four hundred forty-six billion, seven hundred million, seven hundred one thousand, six hundred forty-seven".