120356565999947 has 2 divisors, whose sum is σ = 120356565999948. Its totient is φ = 120356565999946.

The previous prime is 120356565999829. The next prime is 120356566000003. The reversal of 120356565999947 is 749999565653021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120356565999947 - 2¹⁸ = 120356565737803 is a prime.

It is not a weakly prime, because it can be changed into another prime (120356565998947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60178282999973 + 60178282999974.

It is an arithmetic number, because the mean of its divisors is an integer number (60178282999974).

Almost surely, 2^{120356565999947} is an apocalyptic number.

120356565999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

120356565999947 is an equidigital number, since it uses as much as digits as its factorization.

120356565999947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4960116000, while the sum is 80.

The spelling of 120356565999947 in words is "one hundred twenty trillion, three hundred fifty-six billion, five hundred sixty-five million, nine hundred ninety-nine thousand, nine hundred forty-seven".