1265102055643 has 32 divisors (see below), whose sum is σ = 1361768398848. Its totient is φ = 1171115366400.

The previous prime is 1265102055641. The next prime is 1265102055653. The reversal of 1265102055643 is 3465502015621.

It is not a de Polignac number, because 1265102055643 - 2¹ = 1265102055641 is a prime.

It is a super-2 number, since 2×1265102055643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1265102055596 and 1265102055605.

It is not an unprimeable number, because it can be changed into a prime (1265102055641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118107058 + ... + 118117768.

It is an arithmetic number, because the mean of its divisors is an integer number (42555262464).

Almost surely, 2^{1265102055643} is an apocalyptic number.

1265102055643 is a deficient number, since it is larger than the sum of its proper divisors (96666343205).

1265102055643 is a wasteful number, since it uses less digits than its factorization.

1265102055643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11323.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 1265102055643 in words is "one trillion, two hundred sixty-five billion, one hundred two million, fifty-five thousand, six hundred forty-three".