1265146266051 has 16 divisors (see below), whose sum is σ = 1896872584320. Its totient is φ = 833269025160.

The previous prime is 1265146266031. The next prime is 1265146266061. The reversal of 1265146266051 is 1506626415621.

1265146266051 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 14 + 6 + 26 + 605 + 1 = 666.

It is not a de Polignac number, because 1265146266051 - 2⁶ = 1265146265987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265146265988 and 1265146266006.

It is not an unprimeable number, because it can be changed into a prime (1265146266031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282270465 + ... + 282274946.

It is an arithmetic number, because the mean of its divisors is an integer number (118554536520).

Almost surely, 2^{1265146266051} is an apocalyptic number.

1265146266051 is a deficient number, since it is larger than the sum of its proper divisors (631726318269).

1265146266051 is an equidigital number, since it uses as much as digits as its factorization.

1265146266051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564545503 (or 564545497 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1265146266051 in words is "one trillion, two hundred sixty-five billion, one hundred forty-six million, two hundred sixty-six thousand, fifty-one".