1265102055678 has 16 divisors (see below), whose sum is σ = 2567968352640. Its totient is φ = 415406645016.

The previous prime is 1265102055653. The next prime is 1265102055727. The reversal of 1265102055678 is 8765502015621.

It is a super-2 number, since 2×1265102055678² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573509618 + ... + 1573510421.

It is an arithmetic number, because the mean of its divisors is an integer number (160498022040).

Almost surely, 2^{1265102055678} is an apocalyptic number.

1265102055678 is an abundant number, since it is smaller than the sum of its proper divisors (1302866296962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265102055678 is a wasteful number, since it uses less digits than its factorization.

1265102055678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147020111.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 1265102055678 in words is "one trillion, two hundred sixty-five billion, one hundred two million, fifty-five thousand, six hundred seventy-eight".