1061263343661 has 32 divisors (see below), whose sum is σ = 1492015623168. Its totient is φ = 669657162240.

The previous prime is 1061263343639. The next prime is 1061263343717. The reversal of 1061263343661 is 1663433621601.

It is not a de Polignac number, because 1061263343661 - 2¹³ = 1061263335469 is a prime.

It is a super-2 number, since 2×1061263343661² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061263343461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58266846 + ... + 58285056.

It is an arithmetic number, because the mean of its divisors is an integer number (46625488224).

Almost surely, 2^{1061263343661} is an apocalyptic number.

It is an amenable number.

1061263343661 is a deficient number, since it is larger than the sum of its proper divisors (430752279507).

1061263343661 is a wasteful number, since it uses less digits than its factorization.

1061263343661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27041.

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 1061263343661 in words is "one trillion, sixty-one billion, two hundred sixty-three million, three hundred forty-three thousand, six hundred sixty-one".