1027621727947 has 2 divisors, whose sum is σ = 1027621727948. Its totient is φ = 1027621727946.

The previous prime is 1027621727939. The next prime is 1027621728037. The reversal of 1027621727947 is 7497271267201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1027621727947 - 2³ = 1027621727939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1027621727927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513810863973 + 513810863974.

It is an arithmetic number, because the mean of its divisors is an integer number (513810863974).

Almost surely, 2^{1027621727947} is an apocalyptic number.

1027621727947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1027621727947 is an equidigital number, since it uses as much as digits as its factorization.

1027621727947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4148928, while the sum is 55.

The spelling of 1027621727947 in words is "one trillion, twenty-seven billion, six hundred twenty-one million, seven hundred twenty-seven thousand, nine hundred forty-seven".