1147807916557 has 2 divisors, whose sum is σ = 1147807916558. Its totient is φ = 1147807916556.

The previous prime is 1147807916539. The next prime is 1147807916627. The reversal of 1147807916557 is 7556197087411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888634270276 + 259173646281 = 942674^2 + 509091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147807916557 - 2⁷ = 1147807916429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1147807916495 and 1147807916504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147808916557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573903958278 + 573903958279.

It is an arithmetic number, because the mean of its divisors is an integer number (573903958279).

Almost surely, 2^{1147807916557} is an apocalyptic number.

It is an amenable number.

1147807916557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147807916557 is an equidigital number, since it uses as much as digits as its factorization.

1147807916557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14817600, while the sum is 61.

The spelling of 1147807916557 in words is "one trillion, one hundred forty-seven billion, eight hundred seven million, nine hundred sixteen thousand, five hundred fifty-seven".