1061945639057 has 2 divisors, whose sum is σ = 1061945639058. Its totient is φ = 1061945639056.

The previous prime is 1061945639021. The next prime is 1061945639059. The reversal of 1061945639057 is 7509365491601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 909284302096 + 152661336961 = 953564^2 + 390719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061945639057 - 2⁸ = 1061945638801 is a prime.

It is a super-2 number, since 2×1061945639057² (a number of 25 digits) contains 22 as substring.

Together with 1061945639059, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1061945638993 and 1061945639011.

It is not a weakly prime, because it can be changed into another prime (1061945639059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530972819528 + 530972819529.

It is an arithmetic number, because the mean of its divisors is an integer number (530972819529).

Almost surely, 2^{1061945639057} is an apocalyptic number.

It is an amenable number.

1061945639057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061945639057 is an equidigital number, since it uses as much as digits as its factorization.

1061945639057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 1061945639057 in words is "one trillion, sixty-one billion, nine hundred forty-five million, six hundred thirty-nine thousand, fifty-seven".